Yeah, the gameplay is really intuitive. Though the first time around, I wasn't totally sure the exit was actually an exit. I just hit a dead end, accidentally bumped into the central node, and realized it could be destroyed. I think a slight pulsing effect around it would make that much clearer.
I picked up an upgrade that gives you a shield against one hit from an enemy, and that was honestly a WOW moment. I didn't see a single upgrade for the first 5 or 6 levels, so I was not expecting to find one that far in at all.
The mechanic where enemies grow over time seems cool, but I think it should probably be capped near the exit. It felt pretty unfair when I reached level 8 and the game gave me zero chance to keep going. 😄
Super cool concept! I haven't seen anything like this before.