Empires, the award winning Half-Life 2 mod, combines the best of the first person shooter and real-time strategy genres. Fight as either the Northern Faction, remnants of the fallen nation of Jekotia, or as the imperial Brenodi Empire. Empires features:
why is the concrete stuff transparent?
Because it requires an engineer to be built and become "solid".
Environment looks a bit like BattleZone 2 :P
looks like Tribes
totaly like tribes