have you guys ever heard of A Thousand Blank white cards?
it's a no rules card game, everyone makes there own cards and plays them in the deck, deal out the deck to everyone playing, (have everyone make 3 or 4 to make a good hand size). then start playing cards on each other
that's the basis.
here's a link to understand more.
http://boardgamegeek.com/boardgame/4...nk-white-cards