Thanks for the messages, Requirements seem to be often quite subjective. I have an AMD Atholon x2 5000+ 2.6GHz with 3GB of memory and a GeForce 8600GT. I use Debian Linux. Sadly for the game I also have constantly some virtual machines running on it in the background and a bunch of other stuff sucking up precious memory. You can imagine my 356 part rocket makes it lag, but it's still playable. I can land on the mün, haven't made it back yet tough. I've only played the 0.18.3 demo so far. Guess memory is my biggest concern. Still I'll have to take the plunge and buy the full game soon. Now if only I can magically summon some more free time for it