Here's a step-by-step guide on how to reset the WoH game on both Windows and Mac OS's.
Steps to fully clear game data on a Windows-based system
- Exit the game if you have it open.
- Open the Run window (WIN+R) and enter %APPDATA% into the box and press enter.
- This will take you to C:\Users\User\AppData\Roaming where C: is the letter of your OS drive.
- Navigate up to a folder and then into C:\User\User\AppData\LocalLow\HaikuInc and delete the whole World_of_Haiku folder.
This should remove the game data and you should be able to have a fresh start.