[Flopjack]

Incorrect... by a lot.

Starcraft is not an RPG it is an RTS; large difference. The lore or story is practically infinitely more complex than humans + a Protoss wanting to kill Zerg. It's the other way around. Zerg want to incorporate Protoss into their genetic strains, at least in the start of the story... Anyway, going over the story is simply overwhelming because it is so vast and deep.

I'm also not sure that we thought Zerg looked like what aliens are either. Ever seen a Sci-Fi film from then? Remember tall, skinny and large black eyes or robots? Common view of them were humanoid where as Zerg are insect like in design with quite a number of original configurations. If you like to view some nice art I'd check out art based on Starcraft.