Sadly, gotm.io shut down on February of 2024-but thankfully, the game is now being sold for 5 USD on Steam! https://store.steampowered.com/app/497190/Pichon/
Unfortunately the one on steam is the old phaser-based version of the game. The remastered version with the level editor is almost ready but unfortunately I haven't had time to work on personal projects between full time work and parenting.
I'll try to get it out as soon as possible. Might have some time to work on it during June