How to unlock levels as you play the game. Let's say you want to have a level menu, but the player can only choose levels once they are unlocked. Here's how. Also, you'll learn how to use Array Variables! It's cool. You're cool!
To learn more about Array variables in GDevelop, check this out:
https://youtu.be/irG4e2HoaEw?si=wGacDgTR0RCycX1k