Hope this is the place for it. Regarding the terrain layout what tileset is going to be used for Mars? Good ones I've seen are (HotS) Char Fortress (Volcanic) Redstone (Volcanic) New Folsom (Volcanic) Char (Volcanic) Unless a greyish tileset is used and lighting color is altered to be reddish. Also, will the Mars Compound be situated near one of the polar caps so that some ice can be added? One thing I definitely want off Mars is environmental hazards. While the Moon is very passive Mars is hell compared to it. Might give Doom 3 a look as the content here and there are very similar.