Full notes
Full Ratatan update
Read the full published notes in a cleaner layout. The original post stays linked below.
What changed
- Gameplay
- Fixes
- Events
- Performance
- Maps
- Security
Ratatan changes
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.
Update
Added 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
- (Updated2025/09/26 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 be kicked from the session.
Fixed a bug where other players were not syncing correctly during the Ending in Multiplayer.
Improved synchronization of Cobun movement between players in Multiplayer.
Improved stability when a joining player obtained a Cobun in Multiplayer.
Fixed a bug where if a defeated Cobun was falling and the Wave was cleared, it would get buried in the ground and be unable to return.
Fixed a bug where Cobun would sometimes fail to follow after clearing a Wave, causing progression to become impossible.
Fixed a bug where Elemental Force would remain active if the player died while it was triggered.
Fixed a bug where the icons for the Player Upgrades From the Brink and Seven Stumbles, Eight Rises would disappear from the Player Status after being consumed.
Due to incorrect rarity, stats, Decorune slots, and required experience, the weapon Whirlwind Spear Zonzacrin has been temporarily made unobtainable via drops and crafting.
It will become obtainable with the correct rarity in a future update.
Weapons already obtained will remain in your inventory.
Fixed a bug where the death effects of certain Bosses were not displayed correctly.
Fixed a bug where the effect description text of the Player Upgrades From the Brink and Seven Stumbles, Eight Rises did not match their actual effects.
Corrected some text displayed in Decorune and UI.
Source
Changelog.gg summarizes and formats this update. How we read updates.
