New games for a new Xbox owner?

[candy2500]

there so many good game but here is some i like

Fallout 3
Dead Space
Fable 2
Mass Effect (is a must have)

now there are plenty of older games that are at a good price but they still would be like new to you

if you like military type games
Ghost Recon AW2
Battlefield Bad Company
Rainbow Six Vegas 1 or 2

FPS
Halo 3
Bioshock
Gears of War
the first Condemned game was good, Condemned 2 was good but i thought the first was better