Brave Ones!
Rumor has it pressing Alt+F4 unlocks a secret skin. (Don't actually do it.)
May your day be full of laughter, pranks, and good vibes!
We've prepared a totally serious mystical code for this special day:
AprilFD_25
— The Braves Dev Team
Happy April Fools' Day!
Source: Steam Community (opens in a new tab)