LEGO Mars Mission MB-01 Command Base Human astronauts have landed on Mars in their futuristic space shuttle in their quest to find energy crystals The astronauts must defend their Martian base using the air-powered defense system Additional features: Human astronaut base with air locked system for transport of energy crystals & aliens Includes command base, alien transport pods, alien attack ship, futuristic space shuttle, air pump system, foam missiles Contains 763 Pieces Human astronauts have awakened evil aliens who want the crystals for themselves A shuttle with two storage tanks for aliens & crystal energy - ready to launch. The pump shoots aliens through tubes Turn the air pump to the left and slam the pump to launch the foam missiles in defense Also includes 4 astronaut minifigures and 4 alien minifigures that glow-in-the dark