Nice game ! Can you add the arrows UP and DOWN also for the keyboard ? it's very fast and clear! I agree with Fan, add upgrades, weapons and new enemies :)
Nice start. According to me you should develop only game like this. Light and for mobile. To play online everywhere and cross device !! I follow you hoping to see other games like this !
Needs more upgrades, weapons, and enemies, especially bosses.
Continue in this way!!!!