What game should i play?

on my computer I have angry birds, aliance of valiant arms, halo combat evolved, mario forever 5.0, minecraft, need for speed world, plants vs zombies, team fortress 2 all of the pokemon games, and games that i downloaded off of miniclip.com(bloons tower defense 1, 2, 3, 4, avalnche, etc) I also need to delete some for more room for other games. Which games should i delete|||Life