Your task is to get to the exit, but for this you will have to open all the doors to which you need to pick up the keys. The last door will open only if all the hearts are collected.
Run left and right - keys A, D Jumping left, up and right - keys J, I, L On a mobile device: Run left and right - use the left and right side of the screen. Jumping - three buttons at the bottom of the screen.