20, but I wish it was much higher, even if you're just levelling up for nothing, it's crap gaining experience and not actually using it on anything. Any game should have an infinite level cap, even after unlocking everything so that it shows how much the player has played. For e.g. Bungie keep everything so that everything is unlocked at level 20, but you can keep levelling up, so that when you see a level 378 out in the wild, you know that guy has played a lot.