The online video game platform and game creation system Roblox has numerous games (officially referred to as "experiences") created by users of its creation tool, Roblox Studio. Due to Roblox's popularity, various games created on the site have grown in popularity, with some games having millions of monthly active players and 5,000 games having over a million visits. The rate of games reaching high player counts has increased annually, with it being reported that over seventy games reached a billion visits in 2022 alone, compared to the decade it took for the first ten games with that achievement to reach that number.

Adopt Me! is a massively multiplayer online game where the nominal focus is players pretending to be either parents adopting a child, or children getting adopted, though the de facto focus is around adopting and caring for many different pets, who can be traded with other players. As of October 2022, the game had been played upwards of thirty billion times. Adopt Me! was averaging 600,000 concurrent players as of June 2020, making it the most popular game on Roblox. Due to the high cost of pets within the game, with some rare pets selling for up to US$100, a large number of scammers have risen up within the game. As the primary user base of Adopt Me! is on average younger than the rest of Roblox, they are especially susceptible to falling for scams. Uplift Games, the studio behind the game, has accumulated over $16 million in revenue, mostly from microtransactions; the game was the highest profiting game on the platform in the United Kingdom during 2022. The game won three awards in the 2020 Bloxy Awards.

Bee Swarm Simulator is an incremental game developed by Onett where bees follow players around. The bees help collect pollen to convert into honey and attack hostile mobs. The game uses quests, events and other features to hook its players into continuing to play the game. Sophia Kim of Los Angeles Times High School Insider commended the game's simplicity, elaborating that "it doesn't strive to sugarcoat anything at all", further praising its addictivity. The game participated in a Roblox event called, "The Classic", along with an Egg Hunt event taking place in 2020.

Doors (stylized in all caps) is a first-person roguelite horror escape room video game developed by indie game developers LSPLASH and Red, based on another Roblox game, Rooms. Players open doors and go through hotel rooms through trial and error to progress through the game and escape. Players can get items to help them progress through the game, while creatures called "entities" either try to kill the player in various ways or help them. Players can display how they are progressing through the game by showing off one selected achievement and how many times they died.

Doors was released on August 10, 2022. In November 2022, the game hit 1 billion visits. A major update revamping the hotel was released on January 29, 2023. A nod to Rooms was added as part of said update, featuring a revamped version of the game as a secret level. On August 26, 2023, modifiers were added, allowing the player to change their game after beating it. A second floor, titled "The Mines", was released on August 30, 2024. The game participated in the first edition of The Hunt, adding a new sub-floor, called "The Backdoor".

Whitney Meers of PCGamesN described the horror element of the game as "too much for YouTubers to handle". Carlos Mestre of TheGamer described the game as a "spine-chilling adventure" and said that the hotel is "Victorian era-esque". Doors collaborated with plushie manufacturer Makeship for plushies of varuious entities. The game collaborated with another Roblox game, Tower Heroes, featuring an entity, El Goblino, as a limited-time character.

Dress to Impress is a competitive dress-up game where players choose an outfit that aligns with a certain theme. After around five minutes of changing clothes, hairstyle, makeup and other fashion items, the avatars are showcased in a fashion show to be rated by other players from one to five stars. Players can collect in-game currency for more accessories and be placed on leaderboards based on their performances. Initially released in November 2023, it saw a boost in popularity in mid-2024, reaching 2.7 billion visits. In August 2024, the game partnered with English music artist Charli XCX to promote her 2024 album Brat. The game has also received three Innovation Awards, and in 2024 was one of the most popular games on the site, consistently accumulating over 250,000 active users a day.

Flee the Facility is a horror escape room game developed by A.W. Apps where players must escape without being captured by the 'Beast'. Up to four players are designated as 'Survivors', who must escape the facility by hacking several computers before escaping through one of the two exits. One player is designated to be the 'Beast', who must knock out and capture the Survivors in cryogenic chambers before they can escape. Flee the Facility surpassed 3 billion visits on April 16, 2022.

Frontlines (stylized in all caps) is a first-person shooter game that first released to the public as a beta in February 2022, with its full release a year later on February 22, 2023. The game was developed by Maximillian, a team of five people beginning in 2019. In the game, two teams of seven players fight for the highest score in a match. Each player's loadout can be customized with different weapons, of which can be further modified with different attachments. Each player can also customize their 'skills', which grant them different skills in-game.

Since its release, the game has received widespread acclaim, primarily for its graphics, which have been described as "not looking like Roblox" and leading to comparisons between it and the Call of Duty series by critics. It has also collaborated with the metal band Metallica.

Hide and Seek Extreme is a game developed by Tim7775 based on the children's game hide-and-seek, where one randomly selected player is chosen as "It" and has to find the other players. The player that is chosen as It also gains a special ability to help them find the other players, while the hiders have the ability to taunt at It. Maps generally take place in various environments in a house such as a living room, with players being the "size of toys in a toy store". The games "creative" level design and "easy to jump in and play" gameplay have been praised.

Jailbreak is an action-adventure game which is among the most popular games on the site, accumulating tens of thousands of daily players, and which has been played a total of 7 billion times as of August 2024. Released in April 2017, Jailbreak's gameplay consists of players in the role of criminals escaping prison and committing crimes such as heists, as well as players in the role of police and SWAT officers trying to stop them, which Barry Stevens of Entertainment Focus likened to the Grand Theft Auto series. The game was conceived and created as a more fleshed-out version of an earlier Roblox game called Prison Life. It accumulated over US$1 million in revenue during its first year of operation.

Jailbreak was featured in Roblox's Ready Player One event, based around the release of the film. Alex Balfanz, a co-creator of Jailbreak, covered his undergraduate education at Duke University using funds from the game.

MeepCity (stylised in lowercase) is a massively multiplayer online game with noted similarities to Club Penguin and Toontown Online. In addition to its role-playing quantities, MeepCity also features customizable pets, called "Meeps". MeepCity's creator, Alex Binello, stated in 2018 that he was making enough money off the game to pay two employees and support his mother and brother. Binello is noted for his development techniques, which include playing the game on alternate accounts to gauge the reactions of new players. MeepCity was the first game on Roblox to pass 1 billion total visits. The game was averaging 100,000 concurrent players in July 2018. The game received criticism throughout 2021 due to the number of online daters inside the game and inappropriate clothing and actions found in the party feature. This caused the game to be placed as "under review" by Roblox on February 16, 2022, but the game was put back up a few hours later. At the same time, it was announced that parties were to be removed.

Murder Mystery 2 is a social deduction game where players are randomly assigned roles to play each round. One player is selected to be a murderer, who must kill everyone to win. Another player is selected to be a sheriff and must kill the murderer to win; all remaining players are selected as innocents whose goal is to survive. The game's level design has been praised by critics.

Natural Disaster Survival is a game where players are tasked with the role of surviving a litany of natural disasters, including earthquakes, tornadoes, tsunamis, fires, thunderstorms, sandstorms and floods. The winners are the players who survive to the end of the round.

Christian Vaz of PCGamesN rated the game as one of the best Roblox games, comparing it to PlayerUnknown's Battlegrounds. However, the real world disaster response advice that the game was seen to be imparting was criticised by Bevan Findlay of the University of Auckland. This included advice to get "outside in the midst of an earthquake" or sheltering inside to avoid tornados, concluding that "wrong advice on disaster preparedness needs to be avoided".

The Pet Simulator games are an incremental game where the player collects different pets. The game features over 1,000 pets to collect and allows players to trade pets from other people and hatch pets from loot boxes known as eggs.

An entry in the Pet Simulator series, Pet Simulator X sparked controversy among the Roblox community when the developers, BIG Games, integrated non-fungible tokens into the game, the first ever instance of such on the platform. The game has been played over 5 billion times as of January 2023. A sequel, Pet Simulator 99, was released on December 1, 2023, with select pets from Pet Simulator X being able to be transferred to the game.

Pet Simulator received a series of McDonald's Happy Meal toys in November of 2024.

Phantom Forces is a first-person shooter game that has been positively compared to the Call of Duty, Battlefield, and Counter-Strike franchises. In the game, players can select weapons from four military types for each round they play. Additionally, players are able to perform various actions, such as the ability to crouch, lie in a prone position, flank, and jump to cover. Phantom Forces has received praise from critics for its design, controls, and complexity for a Roblox game. The game has also received three Bloxy Awards, and in 2018 was one of the more popular games on the site, accumulating about 10,000 players daily.

Piggy is an episodic horror game series that incorporates elements from Peppa Pig and the indie horror game Granny into a zombie apocalypse setting. The games' style of episodic storytelling resulted in a significant fandom developing prior to the game's finale on May 25, 2020. Piggy was uploaded to the site in January 2020 by Kohl Couture (also known as MiniToon) and had been played 12 billion times as of November 2023. Piggy also collaborated with Metallica in an event called Metallica x Piggy Event.

A sequel to Piggy, titled Piggy: Book 2, released on September 12, 2020. The last chapter was released on October 23, 2021. On November 24, 2022, MiniToon announced that the main game of Piggy was over.

The demo to another entry, Piggy: Intercity, an open-world survival game, was released on January 28, 2021.

Rainbow Friends is an episodic horror game developed by Roy & Charcle where players attempt to escape the titular group of monsters (namely, Blue, Green, Orange, Purple, Yellow and Cyan) by collecting items. Players can hide in a box to avoid detection. Chapter 1 was released on July 1, 2022. Chapter 2, released on June 2, 2023, takes place in Odd World. Jacqueline Zalace of The Gamer described the game as a "horror-themed Miss Frizzle field trip where monsters lure you into a scary theme park to collect items".

Rift Royale is a battle royale game developed by Easy.gg, the developers behind BedWars and Islands. The game was inspired by Fortnite Battle Royale, and was an attempt to create an "awesome competitive game" within the Roblox platforms limitations. In August 2022, the game was shut down following a mass wave of exploiters rendering the game unable to be maintained by the developers, with them stating that what they wanted to do was not possible on the platform. It amassed 29 million visits by the time it had shut down.

Royale High (originally called Fairies and Mermaids Winx High School) is a massively multiplayer online game developed by Callmehbob. The game is set in a magical universe and deals with a fantasy school where players dress-up as royalty or supernatural creatures. Launched in 2017, Royale High had more than 8.2 billion total visits as of October 2022, regularly achieving thousands of concurrent players, making it one of the most popular games on the platform.

Scuba Diving at Quill Lake is an exploration game where the player explores the ocean floor for different treasures. The player is able to sell different treasures to unlock new equipment, which will allow them to explore underwater caverns. Robert Earl Wells III of Lifewire commended the game as the perfect game to "play before bed that won't get you too wound up".

Slap Battles is a fighting game where players are placed in an arena with a "glove". Players use the gloves to slap other players off the arena. The game is also a participant of the first edition of The Hunt, featuring an in-game quest. Jupiter Hadley, writing for Pocket Gamer, wrote a positive reception of the game, describing it as "just silly, wacky fun".

Speed Run 4 is a fast-paced platformer game developed by Vurse. In the game, the player is to complete 31 different themed levels as fast as possible. After completing the main game, players can unlock different "dimensions", which change the themes of each level in the game. The game's choice of music and short-burst-styled gameplay has been praised.

Theme Park Tycoon 2 is a business simulation game where the player must construct their own theme park on a budget. The game features various different mechanics for the player to keep track of, such as sanitary conditions, while having to accommodate for as many guests as possible with various different amenities. Also featured in the game are online leaderboards, allowing the player to compete with others globally in revenue and guest attendance numbers. This game also have some missions, where some users can do their tasks about putting a new ride, or finding guests inside the theme park. The game has been compared to RollerCoaster Tycoon.

The Mimic is a horror game that consists of four distinct "books" based on Japanese folklore where the player is the main character. The game is also a participant in the first edition of The Hunt. Allyson Cochran, writing for The Gamer, applauded the game's "astonishingly impressive graphics", further elaborating that it would "leave you questioning if you've stumbled upon a Roblox game at all". Logan Gilchrist of Dot Esports called the game "interesting because it provides more story than the average Roblox horror game".

Tower of Hell is a multiplayer platform game where the player must get past a variety of obstacles to get to the top of the tower. Unlike traditional Roblox obstacle courses, there are no checkpoints. Tower of Hell has been played around 19.2 billion times as of October 2022. The game was nominated "Best Mobile Game" in the 7th annual Bloxy awards, however lost.

Welcome to Bloxburg is a life-simulation and role-playing game created in 2014. Based on The Sims, it was noted that it costed 25 Robux to access the game, before becoming free-to-play on June 15, 2024. It was acquired by Embracer Group in 2023 under Coffee Stain Gothenburg, a subsidiary of Coffee Stain created for Bloxburg. As of November 2023, the game had been played 8 billion times. Welcome to Bloxburg was used as a demonstrative tool at a summer camp called the Junior Builder Camp to teach children about homebuilding.

Work at a Pizza Place is a game in which players work together to fulfill orders at a pizza parlor. The game is considered a classic among the Roblox userbase, due to it being one of the oldest still-popular games on the platform—first released on November 3, 2007—with the creator attributing its success to the game's ability to encourage socializing. The game has received praise for its driving mechanics. Work at a Pizza Place was the first game on Roblox to be played 100 million times, and it has been played over 4 billion times as of October 2022.

These games are based on intellectual properties separate from Roblox and have the owners' licenses to be so.

The Co-Worker Game is an official IKEA virtual store that opened on June 24, 2024. It is notable for being the first time that paid work is offered through the platform, as ten players will be hired and paid as employees in the store.

Five Nights at Freddy's: Survival Crew is a asymmetrical multiplayer horror game based on the Five Nights at Freddy's video game series by Scott Cawthon. The game description states that players are put into the role of "Fazbear Security's newest team member". Developed by Metaverse Team Frights with oversight from Cawthon, the game was accidentally released on December 20, 2023, following the team misinterpreting instructions given by Cawthon. The game was met with backlash from fans of the series due to its unfinished state, with Rishabh Sabarwal of Dexerto describing the gameplay as a clone of Dead by Daylight. Later that day, the game was shut down after Cawthon heard of its early release, stating that the game was "in no way ready to be released to the public" and would receive a proper release some time in 2024.

Hyundai Mobility Adventure is a virtual space showcasing Hyundai Motor Company's vehicles and "future mobility solutions". It was unveiled with the start of the open beta service on September 1, 2021, and the official service began on October 14, 2021. Hyundai Mobility Adventure allows the player to drive vehicles such as Hyundai Ioniq 5 and experience future mobility such as urban air mobility (UAM), purpose-built vehicles (PBV), and robotics.

Mechamato Robot Battle is a game based on the Mechamato animated series and set in the BoBoiBoy universe and developed by Monsta Game. It is an adventure game released on October 15, 2022, where player can level up by eliminating the legion of bad robots and collect coins by exploring the Kota Hilir town.

Notoriety is a cooperative first-person shooter game developed by Moonstone Games, first released on June 29, 2014. Notoriety was strongly inspired by the 2013 video game Payday 2 and had extremely similar gameplay, including recreations of the game's levels and unlicensed use of its soundtrack. Notoriety was considerably popular among Roblox's playerbase, amassing approximately 227 million plays and 1.3 million favorites until September 23, 2023, two days before the release of Payday 3, when it was removed from Roblox following a DMCA takedown from Starbreeze Studios, the copyright holders of the Payday series. On December 12, 2024, Starbreeze announced they had entered a licensing agreement with Moonstone Games to relaunch Notoriety as part of the Payday series, featuring "official Payday assets, characters, and heists". The remade officially-licensed version of the game, Notoriety: A PAYDAY® Experience, was released on December 16, 2024.

Party!!! at Olivia's Place (stylized in lowercase) is a virtual hangout advergame themed around Olivia Rodrigo. It features a scavenger hunt themed around her second album, Guts, and three songs from said album.

Sonic Speed Simulator is a Sonic the Hedgehog incremental platform game developed by Gamefam Studios in association with Sega of America. Within the game, the player is required to level up by moving around and collecting Chaos Orbs to run faster and jump higher. The game was initially launched on April 13, 2022 as a paid beta game, costing 50 Robux to access, and officially released as free-to-play three days later. Reaching 70 million plays and 275,000 concurrent players in the first week of its release, it broke the record for the largest launch on Roblox, and it would reach 500 million visits in its first four months. It eventually became the first branded game with one billion visits in August 2024.

SpongeBob Simulator is a SpongeBob SquarePants incremental game developed by Gamefam Studios in association with Nickelodeon and Paramount Global. The player controls their avatar or a character from the franchise and journeys Bikini Bottom collecting doubloons and rubies through the use of their "buddies". Buddies collect the currencies for the player which the player can use to purchase various items, such as a boat mount, additional buddy slots, and the Octuple Clam Open, allowing simultaneous opening of eight clams. A paid beta of the game was released on September 9, 2023. With an original set release date of January 26, 2024, the game was later rescheduled to launch on February 2, 2024.

These games, while based on intellectual properties separate from Roblox, are not licensed by the owners to be so. Unlicensed fan games are an example.

3008 is an open-world horror game where players navigate an "infinite IKEA" filled with supplies, either to make a base or as food, as well as hostile IKEA employees that attack players at night. It is based on SCP-3008, which is from the SCP Foundation universe.

Anime Fighting Simulator is a fighting game developed by BlockZone. The game features various different playable characters from different manga, anime, and video games such as Final Fantasy VIII. The game also features a competitive tournament mode and story mode.

Apeirophobia is an episodic horror escape room game based on the Backrooms creepypasta. Players solve puzzles to escape the game's "levels", while also evading entities. The game has been compared to Outlast, and is still in its alpha phase.

Bedwars (stylized as BedWars) is a game developed by Easy.gg based on the fanmade Minecraft minigame of the same name. Similar to the original version, players defend their bed from other opponents while attempting to destroy other player's beds. Unlike the Minecraft version, the game has more weapons to use. Players can collect different resources such as diamonds and emeralds to upgrade their team. The game was one of the most played Roblox games in 2022.

Blox Fruits (formerly known as Blox Piece), is an action fighting game created by Gamer Robot that is inspired by the manga and anime One Piece. In the game, players choose to be a master swordsman, a powerful fruit user, a martial arts attacker or a gun user as they sail across the seas alone or in a team in search of various worlds and secrets with the goal of becoming "the strongest player to ever live". Items known as "fruits" grant the player various advantages and disadvantages in battles against powerful enemies and bosses. The game has been described by VG247 to be "one of the most content-packed games on Roblox", and the game itself has been played over 31 billion times as of March 2024.

Pokémon Brick Bronze was a role-playing game released in 2015 and developed by Llama Train Studio. It was not affiliated with the Pokémon media franchise. It was removed from the platform in April 2018 by Roblox administrators, reportedly after copyright concerns were raised by Nintendo. At its height, the game was regularly reaching tens of thousands of concurrent users. Pokémon Brick Bronze was one of many Pokémon games on Roblox, though it was widely considered the most extensive. The game's graphics were mostly a 3D block-style consistent with most games on Roblox, though the Pokémon were each represented by 3DS models in a pixel art style.

Pokémon Brick Bronze played much like a traditional Pokémon handheld game. At the beginning, players chose 1 out of 21 Starter Pokémon from numerous games. Brick Bronze featured combat similar to actual Pokémon games, with a turn-based battle system and NPC opponents that consisted of trainers and other traditional Pokémon enemies.

Luke Binns of Softonic gave a positive review of Brick Bronze, praising its expansiveness and declaring that "When playing Pokémon Brick Bronze, you may think you're playing the real thing". David Jagneaux, writing in PCMag, also spoke positively of the game, stating that it had "enough original ideas to occupy several days of your time". Steven Asarch, writing in Player-One, gave a negative review of the game, criticizing what he considered the "poor implementation of the battle system".

Ryanair Roblox is a fangame based on the Irish budget airline Ryanair developed by 11-year-old game developer Sebastian Codling. Similar to real life, players have to purchase "tickets" to board the in-game flights, with "value" tickets being for free. Players can also apply for a role-played job in the game. Ryanair Roblox celebrated its millionth flight in October 2023. Richard Currie of The Register described players taking up jobs in-game to "seem to take their roles seriously and harbor a strange fondness for Ryanair".

In the text, these references are preceded by a double dagger (‡):