Most of the parts have been mentioned in previous reviews. Those that have not include the air pump and launcher apparatus, which must be hit very hard on the top to work properly, and trans lime green 6x6 dishes, and trans lime green flagpoles.
The defense station is kind of interesting. As was mentioned before, the missiles do not fire well. This can be solved two ways. Either slam your fist down very hard on the launcher(after checking that it is set to blow air out rather that suck air in) or set the pump to suck in and push on the pump several times before switching it to blow out. The pump has not changed since Life on Mars. It still blows two directions, which is useful. The drill is a basic bionicle drill like the etx alien strike but is on technic beams rather than click hinges. it slides back and forth on a track.
The Mothership could use work as well. It has no propulsion, which is epidemic in this line. It has a handle like the exoforce Sonic Phantom which makes landing tough to impossible. However, it does have good points. The little fighters that seperate off from the side are cool. The small ship that detaches from the front is cool but the midsection looks stupid by itself. great parts though, and I still look forward eagerly to more Mars Mission. I really like this set.