Here's the final form of COOOP !
There's not much new content, but a ton of polish ! Here are the changes :

+ New skin !
+ New keyboard support

- Reworked all levels to make them easier
- Reworked how levels are displayed/unlocked : You now unlock them one after another instead of the previous weird worlds system
- Unlockable skins now cost 4 coins instead of 3
- Reworked the main menu
- New COOOP-themed Wasplay intro

That's it :)
Have fun !