Why space is without aliens ??
Would be so cool if in the colony will be some aliens and I could play them.
Tynan said somewhere (don't remember exactly where) that there will be no "alien" type creatures in rimworld. Surry
please suggest this in mods, i personally think that's a fun idea and MAI as well as other mods would provide a lot of info on how to realize such alien pawns best, sillicate eating aliens that ravage through your stone storages and such
Check the lore primer (link in game on main options screen). Aliens dont exist in the lore but genetic changes to established races do, be it evolved or engineered.