Try the new Texas Hold Em poker game. Its only 800 points. Or get some add-ons for games you already own (Halo reach just released new maps, Battlefield: Bad Company 2 has the Vietnam add-on)
I suggest getting the call of duty world at war maps if u have it. But u probably already have them. I dont. I want dre riese real badly. But i also suggest saving up to 1200 points and get the first strike map pack for black ops. Its great. I have it. Or just get something else