randomized chance of type of mode, team, solo, infection, and boss battle (have everyone vote and highest voted player becomes boss) add playable basketball using this How to make a working basketball game
but use it like if you score you get random temp. boost like speed or damage boost, but you have to pay in cash from knocking people out to get a ball (so knock people out for cash to buy a ball, and rand. chance of making or missing, if make get rand. boost but temp.)