My favorite games are No One Lives Forever
and Hogs of War
Probably no-one knows them.
They're not new but still fun to play.
NOLF is a fun/funny spy fps With lot of different gadgets and weapons. And lots of humour.
Hogs of War is a turn based tactics game like Worms. Only in 3d and doesn't suck like the 3d worms games, and its more strategic.