the 8400 GS keeps you with limited games, all the games that I'll list will work for you but on low settings and some on medium settings
Racing Games:
- Test Drive unlimited, the game is great, with open roads and luxury cars from all manufacturers like Mercedes, Audi, Ferrari, Lamborghini, etc... it got a little bit customization (just the Cars engine and not the body)
also
- GRID is awesome
- Burnout Paradise does not have branded cars but it's still great to smash other cars with the best damage engine available
Shooters:
- Crysis, What can I say, mmm, Awesome
- Bioshock, a bit FPS and a bit RPG
- Killing Floor, a new Unreal Tournement 2004 mod
http://www.gamespot.com/pc/action/ki...or/review.html
RTS:
Age of Empires 3
Stealth games:
Velvet Assassin:
http://www.gamespot.com/pc/action/sa...result;title;0
Sniper Elite,
http://www.gamespot.com/pc/action/sn...result;title;0
a bit old game (2005) but stealth and fun (both games have a WWII atmosphere)
RPG:
- Fallout 3: you don't wanna miss that! (no magic, Guns and lots of them)
- the Witcher: great game and lots of magic
- Elder Scrolls Oblivion: one of the best RPGs (magic too)