It depend on wat u r looking for...

If u wanna play online game ... BF2 would be nice

BF: 2142 runs on the same basics, but with  more future-like atmosphere

but, if you are looking for rrrrrrealllllly high A.I . I strongly recommend F.E.A.R,:twisted:

if u are a hardcore fps gamer  and u just want to something new (weapons, enemies,...), HL2 will b u your answer 8)

the old prince of persia