Jedi knights academy! old but a lot more fun at a lan party than any counterstrike or halo (i find FPS games quite dull and boaring at lan parties)
never tried it in lan (noone wants to play it with me) CARMAGEDDON2. If you know why this game is amazing, youwill know why it would be fun to play it at a lan party.
to give you an idea about how fun carmageddon 2 is here is a tribute to the game i made a few years back (modded the hell out of that game!)
also for anyone here who loves "Killswitch Engage", youll like this video.
Racing games are actually kinda fun at lan parties. I dont like racing games, infact i hate racing games but FLATOUT2 or FLATOUT ULTIMATE CARNAGE is an exeption. The most fun racing/ smash derby game ever! Next to carmageddon2, its gotta be my favorite racing game.
GTA SA multiplayer, idk about lan among a few friends but there are really fun multiplayer servers for it out there where you and your friends can have fun with other people. The roleplaying servers are the best because there are hundreds of people on and they all have to perform whatever job they choose, so there are Real cops, Real orgonised crime people, real drug dealers (well they are people roleplaying as drug dealers no real drugs involved hehe) Basically just like regular GTA SA, but instead of NPCs Everyone is real people playing online and getting away from cops in multiplayer is a lot more fun when the cop isnt an NPC but a real live player!
GTA4 has some Lan capabilities i think. could also be fun.
I dont know about STALKER, but i had a lot of fun playing that online, just because of really large maps, a wide verioty of guns and supplies, made it one of the most fun online FPS games i played!
Also, Morrowind and Oblivion, have some multiplayer mods which could proove fun if you are sucessfull at getting them up and running (i wasnt.)
Also Civ4 online with like 4/5 of your friends can be fun, (if everyone has a lot of free time) I sortof enjoyed it with my buddies back in the day
dont hate people who rip you off,cheat and get away with it, learn from them