The mod is a total conversion. Its is a smaller project of their main game they are planning to make in the future called Orbit Wars. NeoCairo is about an alien invasion the allied forces (humans) have to prevent from happening. You can play with futuristic weapons and the most important thing is that you can use: Mechs (Mecha) Hoverbikes Spacecrafts Tanks Jets Suits, and more suprises are certain to come So, to go short. You have to fight the other (alien/human) team in modes like Alien attack, duel, domination, capture the flag, team deathmatch, deathmatch etc. You can put vehicles at use to stand stronger against your enemy. Its really exsiting and fun. Its officialy stated that everything being developed is for UT2004!