here's a lista of games from on live that i think
are cool

homefront
front lines fuel of war
Batman arkham assylam
mafia 2
just cuase
just cause 2{just cause 2 is better}
fear
fear 3
hitman:blood money
hitman
battle:losangeles
assasin'screed:brother hood
wheel man
predetor vs prey
retro
duke nukem:forever
shell shock
silent sniper

EVERY GAME LISTED U CAN PLAY FOR FREE but 4 30 min

these games i thunk are cool but
i dunno about u guys