this set is super cool you get 8 figures 4 aliens and 4 mars miners the only con is the base is small but still cool you get an nice rocket and jet pack also a alien fighter the pump works fine and the canon is amazing I suggest you get this set because its cheap and fun 5 out of 5

the set is amazing in itself! their is simply no end to the fun.
the pump system works great although i do not know why they only had 4 rubber bands instead of 8, although it is still amazing.
you can switch from blow to suck, so you can transport the aliens everywhere.
the missiles only shoot up to 2 1/2 feet at most, but that doesn't bother me.
the base has a experiment lab with an elevator that can lift aliens from the right tube into the lab, from their it goes on the ex-ray table (powered by a crystal), and finally it goes to the disection table where it is held down with 4 straps and disected (when i play with it i use the included chainsaw }:), more on that later).
the base itself is basically 3 floors(although if modified may easily be made into 4), the first consists of minor skeletal raftor like beams.
the second consists of a fairly small walkway with a door.
the third and final floor consists of an elevator,
an experimentation lab, a raftor that the alien storage cell can slide across, and a radar dish.
their is a seat to control the missile launcher, and another to control the aero tube chamber.
the rocket-ship consists of an engine, neat folding wings, a storage compartment, and an ejecting cockpit.
the alien ship is pretty basic, with slight foldable wings.
overall it has 4 nonused gems, a chainsaw, binaculars, a jackhammer, a metal detector, a rocket ship, a ufo, a command base, 4 foam missiles, 4 astronaughts, 4 aliens, and a pump system.

pros:

air system works great.
rocket-ship has ejecting cockpit.
astronaughts have very nice faces.
pump system is adictive.
lots of minifigs.
detailed experiment lab.
nice radar dish.
storage tank for alien.
tubes can attach to most vehicles.
rocket-ship has a nice handle.
ufo is very detailed.
missile launcher has a neat swivling barrel.
and tubes unexpectadly don't scratch alot.

cons:

my 4 aliens didn't glow in the dark, even though the box said they did.
air pump came scratched.
alien ships wings are floppy.
could have used 4 more rubber bands.

overall 4.5/5 because the only cons that bothered me are the non glow in the dark aliens and not enough rubber bands.
any-ways it's a great buy if your a fan of fun.
good luck getting it and good day.
sencerily saber755.

This is an incredibly good set, even if it looks empty.
The centre (i'm australian) can fit small ships like the Astro Fighter and Crystal Hawk. The shuttle is massive, and the alien jet is cool.

Alien Jet
Pros:
Powerful
Cool
Fits Alien well

Cons:
wings are too floppy
rear fin tends to break off in rough play

Shuttle
Pros:
Massive
space for jetpack thing
Guns
stores canister thingies

Cons:
unstable when standing, if not supported.
stasis tubes tend to flop around

Base
Pros:
Lots of space for other stuff
easily modified
Nice lab

Cons:
looks thin and skeletal
from certain angles

air pump sytem
Pros:
great
works (please don't shout at me...yet)
cool concept

cons:
only works if you punch it or slam it (now you can shout at me...if you want)
requires lots of support
doesn't quite fit in the box...

an excellent starting set.
if you like mars mission, or space, get it!

This is good set for a space base, that one from 'life on mars' was ugly! By building the set, I got a little problem, 2 parts from the alien fighter were not included, but I get this parts from LEGO Direct.

pros:
-The fighter is very big and can store the jetpack!
-You could build more modules at the base!
-Many humans and aliens (2 in pods).
-The pump system add playability to the set.

cons:
-1 human more would be better, 1 controls the Shuttle, 1 the pump system and another 1 defend that other human with jetpack that explores mars, but, who runs the lab?
-lab is too small.

I got this set for Christmas and built it right away after getting over the excitement.

Pros

Comes with 4 human and 4 alien mini figs.
Comes with cool alien ship.
Has a human shuttle that can hold a jetpack and has those orange canisters.
Nice and Sturdy.
The tubes that shoot aliens everywhere are pretty cool and actually work quite well.
There is a little lift that can bring an alien up to the experiment lab.
The gun turret also works pretty well for just working with air.

Cons

Too many stickers no pre-painted parts to this set.
Aliens can't move their arms so it's hard playing with them.
The experiment lab is a little too small.
Below the experiment the experiment lab is a little shaft that runs to the back of the base and it has no purpose at all.
The wings on the space shuttle can sometimes break off real easily.

Overall this set is pretty sweet and is recommended to anyone who likes the Mars Mission series or wants a lot of special pieces that you can't find in any other lego set.