Here is a list with populair LAN games. some are rated, others are not.
Worms Armageddon: Good old Turn Based action. this game still has it's great weapons and worms.
Rating: 8/10
Company of Heroes: Real Time strategic World War II Gaming, the game mainly focusses on realism so each faction may seem a little overpowered, every now and then
Rating: 9.5/10
Call of Duty 2 Fast paced shooter. it has lots of realistic World War II weapons and focusses on their realism.
Rating 9/10
Battlefield 2 Real Time modern warfare game. it focusses on realism of weapons and the use of military equipement like artillery and RPV planes and such.
Rating: 9/10
Battlefield 2142 Fictional Warfare game which focusses on the use of futuristic military equipement.
Rating: 8/10 Day of Defeat First person World War II shooter, which focusses on fast paced action with lots of players.
Rating: 7.5/10
Counterstrike: Source Good old fast paced shooter which focusses on teamwork and firepower.
Rating: 7.5/10
Halflife 2 Fast paced action/shooter game which focusses on physics and ragdolls. when you smack someone's head with the gradity gun, you'll notice it very well.
Rating: 8.25/10
Unreal Tournament 2004 Fast paced action/shooter which focusses on alien weapons and trigger happiness. Get your gear on.
Rating: 7/10
Medal of Honor: Allied assault. Fast paced World War II shooter which focusses on true firepower and skills.
Rating: 8/10
War 3 Not available
Rating: Not available
C&C Generals Real time strategic game which focusses on each factions overpowers and superweapons. due to the little amount of different 'generals' in the game, it will not receive a big rating.
Rating: 6/10
C&C Generals Zero Hour The extra generals have arrived in this expansion pack of 'C&C Generals'. it has great variaty and because of that, you won't get bored soon with this one.
Rating: 9.5/10
Rainbow Six: Vegas (2) Realism at it's best. in this series you play a trained soldier who needs to take care of terrorists. it has a great variaty of weapons and defense equipment and focusses on realism.
Rating: 10/10
Neverwinter Nights 1 and 2 Not available
Rating: Not available
Diablo (2) Not available
Rating: Not available
Dungeon Siege 2 Not available
Rating: Not available
Prey Fast paced First person shooter which focusses on trigger happiness with it's variaty of weapons.
Rating: 7/10
System Shock 2 Not available
Worms 2 Just like worms armageddon, this game just focusses on it's wide variaty of weapons and worm killing devices. great for multiplayer games
Rating: 8/10 LieroX + Mods Madness has come. This game is practically the real time version of worms with an adjustable reloadtime. so you can spray your wepaons withour reloading if you like. this is great with 4+ people.
Rating: 9/10
Soldier of Fortune 2: Double Helix Realism focussed game with fun weapons and lots of gore. this is not meant to be played by the ealisy offended people and kids.
Rating: 7.5/10
Micro Machines V4 Great racing skills aren't needed here, because this game is easy to learn and fun to do with multiple people. it has a wide variaty of weapons and over 30+ tracks. so you won't get bored easily here