You can get characters by opening boxes. This costs gold, which you get from playing. The brown box gives 1 character. The purple box gives 3 characters. - Choose the character you want to play with. Then press play to play. - Player 1: A and D to move. W to jump. S to attack. - Player 2: Arrow keys to move. Up arrow to jump. Down arrow to attack.
Credits to @TimoTastic for the code in his game "2 player battle|Marvel" If someone can fix the bug when you're on the character select screen and you see a chest as your character and/or when you open a chest you get a chest. Please fix and tell me how to improve it or remix. Thanks.