PC's are different to Play Stations (PS)in as much as PS are DVD based. This allows manufacturers to "country code" DVD's, whereas, a PC, is a PC, is a PC, the world over!!!
The only aspect you have to check, is whether your PC specification is adequate for the game required. I would also be wary of the specified requirements on games. Although there is little doubt the manufacturer can prove they will work at the specified requirement, whether they are "playable" remains open to discussion. It's a bit like Microsoft's claims for minimum requirements for XP, sure XP will run, but how long have you got to wait for anything to happen?