Try Alien Shooter, it is almost the same but with some more options/graphics. In the survival mode I got now 23515 points... the whole map was full of blood of dead and alive aliens.
The webpage is http://www.bigfishgames.com/downloads/alien/index.html
but out there you can find the full version.

Yeah, i used to love crimson land, ill try this one out. Looks pretty cool.

nah crimsonland was much better, less thinking more shooting.
besides, the big red alien cant be killed with shotgun/pistols ;(

I'll have to check it out ^^

Crimsonland was fun for a couple of days, then it got boring :/ lol

Ran outta stuff to do in it :P

Yeah, its sort of fun. The downside is the time limit--ill just be getting into it and then it will stop. Pisses me off. Anyway, while the graphics are better, or more 3d than crimsonland, i like crimsonlands gameplay better....thanks for 'sharing' anyway./..

Well, it looks freaky how your legs swivel around under your torso ^^ lol

And it looks kinda crap compared to crimsonland...

And the time limit is way too short...

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