Ratatan is a rhythm-driven roguelike action game that blends side-scrolling combat with music-based controls. You and up to three friends can team up online as waves of over a hundred characters clash in chaotic, large-scale melees. Success depends on timing your rhythm commands to direct your Cobuns, positioning your Ratatans effectively, and knowing when to pull back - movement and tactical choices matter as much as timing.
Set on the bright, toy-like island of Rataport, the adorable, animal-like Ratatan characters share a single dream: to travel to The Everafter and meet the mysterious Goddess. Their hopeful journey is filled with persistence, charm, and an upbeat soundtrack that drives both combat and mood.
The game features expressive 2D animation designed to give each character lively personality, and a catchy, toe-tapping score that ties the action together into a heartfelt, energetic adventure.
Early Access v0.5.10 Hotfix Patch Notes
Important Notice(Updated: 2025/09/26 11:00 JST)The issue in Ver.0.5.9 that caused progression to become impossible has been fixed, and the game has been re-released as Ver.0.5.10.We apologize for the inconvenience caused to all players.(Updated: 2025/09/25 12:40 JST)A critical progression-blocking bug was found in Ver.0.5.9, so we have rolled back to Ver.0.5.5.If you have already updated to Ver.0.5.9, please update again to revert to Ver.0.5.5.We will announce the re-release of Ver.0.5.9 once the fix is complete.UpdateAdded two types of Weapons to the drops from the Altars in World 4 and World 5.If you’re lucky, you might get something interesting from the Goddess Lottery.Secret items obtained in Ver.0.5.9 must be acquired again in Ver.0.5.10.We apologize for the inconvenience and thank you for your understanding.In Single Player, it is now possible to skip the Ending.Hold down a key to skip the event and return to Rataport.Optimized background textures during gameplay to reduce data size and rendering load.Adjusted terrain across all Worlds to reduce elevation differences.Updated Credits. Bug Fixes(Updated: 2025/09/26 11:00 JST) Fixed a bug where the game could become unplayable if you opened the Formation screen after playing an event in the lobby.Fixed a bug where the NAT Type was not being diagnosed correctly when joining Multiplayer.If the environment is judged as difficult for Network Multiplayer, please review your router’s security settings or try another internet connection.Fixed a bug where returning to the Lobby before the Owner in Multiplayer would cause you to ...
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