1. Call of duty Franchise.

while sometimes call of duty offers heart pumping and water cooler moments it just provides frustration and cheap deaths

2.Team Fortress 2

i find this game to be useless and boring. theres no unlockables levels, or anything, it's just shoot to kill. atleast for all the games i played on the 360

3. Half Life franchise.

while you get emerged in this games interesting take into the future, it just gets a little boring after a while