Looking at the world of gamers and we are a somewhat funny bunch, the japanese love their Role Player Games while the Americans love their American Football and Baseball Games whilst for me in the UK we love games like Fifa and Championship Manager.
Whilst hardcore gamers will try any type of games some people are stuck to just 2 types of games.
So for the sake of interest and this doesnt have to be PSP Specific because some game types dont exist yet, lets have your 3 favourite types of games and where your based and see if a pattern emerges (all in the name of fun)
Ill start
UK
1) RTS Games
2) Management Sims
3) FPS/War Games