Ballmen is a total-conversion for Half-Life 2 featuring frenetic, fast-paced deathmatch with a unique twist: wallwalking. Essentially, any surface is traversable, including walls and ceilings. Combine that with eight weapons and a host of power-ups, and you get Ballmen. The mod is currently in beta stages. Visit our website for more information. Beta 1.5 now available for download.
The Rocket Powerup, which lets you fire rockets with the speed of an automatic weapon.