CrystAlien ConflictThis is a featured page

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Game Walk-through
CrystAlien Conflict Sprites

About CrystAlien Conflict
The Lego Mars Mission CrystAlien Conflict game was made for by 4T2 Multimedia (Now known as "Amuzo"? Their work can still be seen here.) and was featured on Since then, Lego has closed the Mars Mission site, therefore making it impossible to play the game there, but there is an offline version of the game and it is fully functional. Leveleditor6680 also has a site hosting the game for you, so you can play it online (same link as below).

CrystAlien Conflict was immensely popular, and was considered to be one of, if not the greatest LEGO online game of all time. It is a one-player strategy game where you play as either Astros (Astronauts) or Aliens in a quest for domination of Mars and the supply of Energy Crystals. Each faction has 9 levels to play, and a 10th "Conflict" level. (seven bonus levels may also be unlocked using cheat codes) In the Hive Edition of the game, new levels called "Special Ops" were introduced (3 for the Astros, 1 for the Aliens). Every level opens with an animation that explains the story of that level.

One game to rule them all:

  • 650,000 game plays within the first two weeks after its release
  • 20,000,000 game plays in first two years
  • Over 60% of players returned for more
  • Winner of NMA Effectiveness Award 2008 (Games category)
  • Top 10 global adver-game of all time!
Mars Mission CrystAlien Conflict

Stuck? Take a look at this walkthrough

There are quite a few sprites from the game.
Check them out at:

CrystAlien Conflict Sprites

Latest page update: made by Redsnapper39 , Jul 24 2014, 12:08 AM EDT (about this update About This Update Redsnapper39 changed the walkthrough link - Redsnapper39

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TyranoRex Crystalien Conflict 2.0! 2 Dec 22 2014, 4:30 AM EST by DracoSupreme
Thread started: Dec 21 2014, 3:20 PM EST  Watch
It would be sooooooo cool if Mars Mission was restarted and Lego (or an incredibly dedicated fan) made a Crystalien Conflict 2 with awesome 20 level long campaigns, at least 5 special ops for both factions, a ton of secret levels, maybe some new units based on things such as the astro mech (appeared in the set 'ETX Alien Infiltrator') that haven't made an in-game appearance yet, possibly a third faction (Other aliens, ancient inhabitants of Mars who have resurfaced etc.) and maybe even a two player mode. I know it will probably never happen, but it would just be so cool if it did.
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Anonymous pretty similar 1 Dec 9 2014, 3:00 PM EST by ETXAlienRobot201
Thread started: Dec 8 2014, 8:46 PM EST  Watch
its like a Lego tiberian sun
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Anonymous fun 0 Nov 1 2014, 8:04 PM EDT by Anonymous
Thread started: Nov 1 2014, 8:04 PM EDT  Watch
fun love this game reminds me of starcraft just with lego men and aliens
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