This game is really cool. Excellent work! If you intrested in my opinion... i think you should add some more features, like dash in jump (or just dash) and e.t.c.
Gameplay will be more fun, but this game is good anyway :).
And... PLEASE!!!! TELL ME WHY ESC BUTTON DOESEN'T DO WHAT THE BACKSPACE DOES?
WHYYYY?????!!!!!! It's horrible... really...