These games are made for fun and that's exactly what the system link is meant for. I'm trying to get a good source of games that support this feature so bare with me as more and more will be added as I find out. And if any are listed that aren't system link games, please notify me. 

System link info can be found on LAN parties page. 

Halo

Halo2

Timesplitters2

Project Gotham Racing 2

Return to Castle Wolfenstien

Brute Force

Unreal Championship

Unreal 2

Shadow Ops: Red Mecurey

Counter-Strike

Whacked

Fuzion Frenzy

Conker: Live and Reloaded

Splinter Cell: Pandora Tommorow

Mech Assault

Mech Assault 2: Lone Wolf

Tom Clancy's: Ghost Recon

Ghost Recon 2

Battlefield: Modern Combat

Kung Fu Chaos

Midtown Madness 3

XIII

Midnight Club 2

Midnight Club 3: Dub Edition

Last Updated: 8/22/04