The game is good, I like the idea. but sadly im alone at home and cant play a local multiplayer :'c
you should try to add a simple AI to the game. also, add a cooldown to the attack, because if you spam the attack button fast enough you can instakill the enemy
the strabery jam has less gravity than the peanut butter.
maybe adding some jam audio to the attack would add more to the game, it needs some sound effects.
and try to change the win text to the color of the winner.