Great controls. Truly appreciate the effort to understand how a this game may be played on mobile. The upgrades are a nice touch. Maybe add some boss battles?
Oh, that could be really cool, like a last level that starts scrolling down and go faster and faster until you die. But that's for a future major version of the game.
Maybe have an enemy that throws balls and you just hit them back to hurt them. Have a health bar that you need to deplete by hitting them before being able to pass the level. Dunno, might add some kind of story mode to it. Beating the boss would give the user some kind of upgrade or special weapon.
