40k and Starcraft
Tyranids and Zerg
Eldar and Protoss
Space Marines and Terrans
I mean ... I guess its just like how all fantasy games (usually) include humans, orcs, elves, dwarves, and demons ... but still!
I mean ... sure Starcraft is a bit more original (not based directly from fantasy/ Warhammer), so it doesn't have orcs and demons ... and sure fantasy games don't have Hive Mind Bug Species (although they do have Zombies/Necrons)
And really, I think that we can all agree that the Zerg/Tyranid race is a bastard child between James' Cameron's Aliens and the book Starship Troopers ... whose older brother was the MOVIE Starship Troopers
Who agrees? (About Zerg/Tryanids only existing because of the movie ALIENS by James Cameron)