UFO 50

UFO 50 is a video game collection developed and published by Mossmouth? containing 50 distinct games, presented as the catalog of a fictional 1980s studio called UFO Soft.³¹³ It was released for Windows via Steam on September 18, 2024, and for Nintendo Switch on August 7, 2025, priced at $25.¹³¹⁸ The collection was a collaborative effort by six developers who worked on it for roughly eight to nine years, its production likened in breadth to a set of small, self-contained projects assembled into one package.²¹³

The organizing conceit is that all 50 games were produced by UFO Soft, an obscure but “ahead of its time” company, for a fictional 8-bit console called the LX.³⁴ According to the game’s story, the titles were made between 1982 and 1990, and as players move through the in-fiction chronology the games grow more technically sophisticated.¹⁴ Recurring characters and outright sequels tie the catalog together into a shared continuity — UFO Soft’s mascot, Pilot, appears in many games as well as in a dedicated title, Pilot Quest, a top-down action game in which the player explores dungeons and grows a home base.¹¹³ The developers insist the entries are not minigames or microgames: each is described as a complete experience with its own title screen and ending credits, ranging from short arcade games to a JRPG that can take many hours to beat.¹¹³ One of the largest, an RPG called Grimstone, can take some 20 hours to play through, according to Yu.¹

Mossmouth?, the studio behind Derek Yu?’s 2008 platformer Spelunky?, published the collection.²¹⁸ The six-person team consisted of Yu and his childhood friend Jon Perry, a tabletop and video game designer based in Ambler, Montgomery County, Pennsylvania; Eirik Suhrke, who had handled music and audio for Spelunky; Ojiro Fumoto, creator of Downwell?; Paul Hubans, who directed the horror adventure game Night Manor; and Tyriq Plummer, creator of the roguelike platformer Catacomb Kids?.²¹³ Perry, originally from Los Angeles, moved to Fishtown with his wife in 2018 and had worked as a private tutor before making games full-time.² He had a major hand in 16 of the 50 games, while Plummer co-directed several of the largest, including the first-person dungeon crawler Valbrace.²¹³ Although the team specialized, each member is credited with contributing design, writing, artwork, and programming across one another’s games, sometimes extensively.¹³

The whole catalog shares a unique 32-color palette and other self-imposed restrictions on color and audio, chosen to make the games feel authentically period, though the team declined to simulate sprite flickering or slowdown, judging that it would not make the games more enjoyable.³⁴¹³ All 50 games are unlocked from the start; the developers compared the experience to browsing a friend’s cartridge collection, or to retro multicarts, and made exploration of the “Library” part of the game itself.³¹³ Yu has described the Library as a place, “like a map to explore,” and said the team never considered forcing players to unlock games as they progressed.³ Roughly half the games include local multiplayer, in cooperative and versus modes, but there is no online multiplayer.¹³²⁰ The collection carries an ESRB rating citing blood, fantasy violence, and simulated gambling.¹⁸

Origins and design

The project grew out of Yu and Perry’s shared history: as children they had released freeware games under the name Blackeye Software using the tool Klik & Play, culminating in the 2002 action game Eternal Daughter.³¹³ Around 2016 the two wanted to make a game together again; Yu suggested Perry build prototypes in GameMaker, and the idea of making a handful of small games evolved into making 50 of them, in part because selling small games individually was no longer viable as it had been in their freeware days.³¹³ Suhrke — who had collaborated with Yu on Spelunky — joined soon after, and the three brainstormed the majority of the games that made the final collection, with further concepts contributed by Fumoto during roughly half a year on the team, and by Hubans and Plummer.¹³ In 2020, Suhrke and Yu stepped away to release Spelunky 2?, concluding that the ambitious concept needed extra time to cook.¹³ The collection was first revealed in 2017 and originally expected around 2018 or 2019, and it slipped by several years as its scope ballooned before a release date was announced at Summer Game Fest?’s Day of the Devs showcase in 2024.⁴⁷

Some games shifted substantially during the long development. Several of Perry’s designs, such as Rail Heist, began as multiplayer concepts and gained single-player modes that played quite differently.³ Yu was directing a cyberpunk RPG that was eventually replaced with Magic Garden, an arcade game he added to vary the mix and lighten the workload after feeling the collection had one too many RPGs.³ Barbuta, an exploration-heavy RPG, was not designed as the first game in the chronology but was placed there once the team realized it best fit the role of an ancient-feeling 1982 title, complete with a hum when the player changes screens.³

Yu has cited the “mystery and allure” of 1980s games as the team’s central inspiration, praising an era in which players “weren’t always sure what kind of experience you were in for” and games “weren’t afraid to let you get a little lost”.¹ He named the original Legend of Zelda as a personal reference point, recalling playing it while his father drew maps of dungeons and secrets so the two could work as a team to figure out where everything was.¹ The collection spans a wide array of genres — platformers, shoot ‘em ups, puzzle games, RPGs, roguelites, tactical war games, fighting and sports games — some of which, such as roguelike platformers and tower defense, did not exist in the 1980s the games purport to come from.¹⁴¹⁸ Individual entries drew on recognizable models: reviewers compared Avianos to the strategy game Defender of the Crown, Kick Club to Bubble Bobble? and Snow Bros., Paint Chase to a cross of Pac-Man and Splatoon?, Rail Heist to XCOM?-style tactics, and Night Manor to point-and-click adventures such as Shadowgate.²⁰

Reception

UFO 50 received strong reviews, holding a Metacritic? score of 91 for the PC version, based on 19 to 21 critic reviews, and 90 on Nintendo Switch.¹⁴² On the PC version’s user side the score stood at 91 based on 139 user ratings as of early 2026.¹⁴ Critics praised the consistency and variety of the collection; a Guardian writer called its “sheer devotion to the bit” astounding and its scale “quietly astounding,” while a Digitally Downloaded reviewer added 30 of the 50 games to their favorites.¹⁵²⁰ Eurogamer scored it 5 out of 5 and Edge 9 out of 10.²¹ It ranked as the fifth-best-reviewed game of 2024 on Metacritic, sitting just behind Final Fantasy VII Rebirth, and won a Creative Achievement Award from PC Gamer.²²¹

The game won the Off Broadway Award for Best Indie Game at the New York Game Awards in 2025 and was a nominee for the ceremony’s Big Apple Award for Best Game of the Year.⁶

A physical version for Nintendo Switch was later produced through Fangamer, offered in standard and deluxe editions; the deluxe edition includes a 100-plus-page companion guide, prints, sticker sheets, and a soundtrack download code.¹⁹ The soundtrack, composed largely by Suhrke, was released separately on Bandcamp and Steam.¹³