Transformice
Released Jan 2015
Transformice is an MMO platformer about dozens of mice running to bring back the cheese! Will the almighty Shaman help you or just ruin everything? Millions of levels, hectic physics, skill trees, and more importantly... hats!
88% positive · 29K reviews
Not yet
Released, ongoing live service game
High confidence
Live Service
Not yet
Released, ongoing live service game
High confidence
Live Service
Where to get it
Free on Steam
Evaluation
Transformice is a free-to-play MMO platformer that has been running since 2010 (arriving on Steam on January 30, 2015). The game is designed as an ongoing live service: it features cosmetic shop items, player-driven content through millions of community-made maps, seasonal events, and regular in-game updates. The developer, Atelier 801, celebrated the game's 15th anniversary in May 2025 with a week of triple XP/cheese bonuses, returning collector shop items, and new "galaxy ground" content — framing the milestone enthusiastically and looking forward to "even more epic runs." Shortly after, in July 2025, they launched "The Great Relic Fishing Expedition," a new seasonal event featuring relic collection mechanics and 12 new maps. This pattern of anniversary celebrations and seasonal events is consistent with an actively maintained live-service game that Atelier 801 continues to invest in. There is no indication the developer has any plans to wind down support.
Evidence
New seasonal event launched: The Great Relic Fishing Expedition, featuring relic collection mechanics and 12 new galaxy-floor maps
15th anniversary celebration with triple XP/cheese week, returning collector shop items, new galaxy ground content, and in-game surprises — framed as looking forward to continued play
Media
Details
Developer
Publisher
Atelier 801
Achievements
14
Platform
Windows, macOS, Linux
Controller
—
Steam Deck
Playable
Players
Multiplayer
About this game
Transformice is an MMO Mouse Simulator platformer about dozens of mice running to bring back the cheese, trying to avoid pitfalls, leading to unexpected and hilarious situations!
You have less than two minutes to be the first mouse to bring back the cheese by all means, with the Shaman's help or curse within the multiple game modes and millions levels available: no two games are ever the same!
In this stupidly fun "free to win" game with hats, will you survive the cheese quest? Will the Shaman help or ruin everything? Join the 55 million people who already tried!
You are a little mouse looking to bring back the cheese; each successfully taken back unlocks more content and levels up your Shaman skills... But will you be able to make it? Things often go disastrously wrong with ridiculous chain reactions full of evil physics. There’s always a trick in these uncaring set-ups!
Will a horde of mice rush in and get everybody killed? Will the Shaman successfully get you to the cheese? Or ruin it all? Will the cannon balls let you? With seven official game modes, 200 official maps, dozens of extra player-made gamemodes and more than 5 million player-made maps, almost endless possibilities await you. Not even counting what you will make thanks to the level editor and LUA modules.
You have less than two minutes to be the first mouse to bring back the cheese by all means, with the Shaman's help or curse within the multiple game modes and millions levels available: no two games are ever the same!
In this stupidly fun "free to win" game with hats, will you survive the cheese quest? Will the Shaman help or ruin everything? Join the 55 million people who already tried!
The Mouse Simulator You've Been Waiting For
You are a little mouse looking to bring back the cheese; each successfully taken back unlocks more content and levels up your Shaman skills... But will you be able to make it? Things often go disastrously wrong with ridiculous chain reactions full of evil physics. There’s always a trick in these uncaring set-ups!
Shaman mouse, Pro Gamer or loser? Good or evil? You're in charge!
Every round, one of the player is the almighty Shaman who can use his skills to help his fellow mice get safely to the cheese... or ruin everything? The more mice you save, the faster you will level up in the Shaman's skill trees to build amazing contraptions! Create whatever your imagination can come up with, the fate of the game is at your fingertips.No Two Games Are Alike
Will a horde of mice rush in and get everybody killed? Will the Shaman successfully get you to the cheese? Or ruin it all? Will the cannon balls let you? With seven official game modes, 200 official maps, dozens of extra player-made gamemodes and more than 5 million player-made maps, almost endless possibilities await you. Not even counting what you will make thanks to the level editor and LUA modules.
Join For the Fun, Stay For the Friends
Gather with your friends to play, chat, troll and laugh together. Participate in the upcoming events, create your own tribe and share on the forums. Challenge your friends to get the top titles and then challenge the world by farming your “firsts”! You'll be challenged by dozens if not hundreds of other mice to be the best.The Ethical Free to Play Business Model
Transformice is -literally- free to play. HATS! All the items you can buy are and will always be cosmetic: you will never see a gameplay item! Also, 100% of the buyable items are unlockable ingame: that's right, only with your skill you can have them all! Good luck though, some "master achievements" items are very difficult to get. Every cheese you bring back is added to your wallet: the more cheese you have, the more content you will unlock.Are these done yet?
Last evaluated Jun 28, 2026
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