There were also environmental hazards, such as Meteors striking the map, Rockfalls, and lasers. You could also capture Control Zones within a map, which would become your territory to use and build in.

The Powerpack was used as a power source for objects and could power up to four objects at once. Buildable objects include Sentry guns, Powerpack, Buff Station, Healing Station, Spawn Station, and the Resource Pump. You could also spawn vehicles using a vehicle bay, among these vehicles was a Motorcycle, Wagon, Battering ram, Siege tower, and Alien-exclusive Tripods referred too as Striders or Walkers. Resources were a mineral called Jojierium, which was used to build objects and buildings for your team. The game plays much differently then any other Team Fortress game, the objective was for one team to gain the most resources before the round ends. The only thing that ever resurfaced was concept art, the source code, and two models included with a leaked copy of CS:S. It was never publicly revealed or shown, and was only revealed via two leaks. The War of the Worlds themed game was the last design phase for the cancelled, RTS-like, Team Fortress 2. It went under many different design phases to see what stuck, such as Space TF2, Roman-inspired Humans vs Aliens, and finally, War of the Worlds.

Team Fortress 2: Invasion is a cancelled version of TF2 that was in development in between 2001 to 2002. This project is based off the build by Hogsy, with his permission

Team fortress 2 concept art