Mobile Forces

Military-themed FPS where you use vehicles, special weapons, and tactics in urban environments.

Once a great mod, it is now a military-themed first-person shooter that combines quick reflexes with crafty tactics. It lets players control a wide range of vehicles, use a variety of special weapons, and fight in a cleverly created urban environment.

If that ever becomes boring, there is a community that can provide mods. The game is described as having well-balanced vehicles and weapons, large maps that make full use of vehicle mobility, and addictive gameplay.

Its low system requirements also make it a good choice for an ad-hoc LAN party.