I honestly wasn't expecting it but this game is pretty addicting, it quite fun! good job!
I just feel like i have to ask: why is text black on blue? it's very hard to read.

Also, just out of curiosity, which keyboard layout do you use? cause it feels like it's not QWERTY (which is the most widely recognized and used worldwide) given the keys the game uses.

if it is QWERTY based then i'd suggest moving the dash button from 'z' to 'q' or 'e'. That would make it more Natural.

Cool browser game! Keep Devving!