Your mission in this sequel to Dark Base 2 is to accomplish all missions on the strategic map, using at best the available weapons, armors and devices. DB3 is now an action sci-fi top-down shooter with RPG elements and a ton of action. In the top-secret special Phoenix Team failure is not allowed, so if you fail just one mission your game is over. Use WASD KEYS to move around. Use YOUR MOUSE to aim and shoot. Use "Q" KEY to to switch marines battle formation, use "E" KEY to to switch weapon. Use 1-3 NUMBER KEYS to equip weapons. Use "C" KEY to drop Proxy Mines, use "V" KEY to drop X-AF Decoy. Hold SHIFT + Left Mouse - to fire grenades (with X-GL battle rifle equipped). Good luck!