Basically a 3v3 tag fighter with a 4 button layout (Light, Medium, Heavy, Special), Special being a sort of character gimmick that cries throughout the roster
Motion inputs, Level 1 and 3 supers, EX moves, Pushblock, Airdashes/Double jumps but on a character by character basis, DHCs, those are alot of the general ideas when it comes to core mechanics
I also have specific movelists envisioned for a decent amount of the cast too