Cute graphics, music is matching with the game. I couldn' find out how to buy upgrade :( And it was too hard for me to move around with that size and wall colliders. Love the idea. Good job!
Hi, upgrades were automatic, every time you collect enough money your max oxygen increase. I understand that it might be confusing because at the beggining I was planning to add an actual shop and only remnants of it remain in the game. Thanks for playing!
