Natural Selection 2 gets "Gorgeous" today, along with a 50 percent off sale on Steam. The update, according to Hugh Jeremy of developer Unknown Worlds, introduces "new weapons, creatures, abilities, map, tutorial system and more: Gorgeous takes the struggle for survival between alien and marine to the next level."

At 50 percent off, Natural Selection 2 will be $12.50. We've followed up to find out how long the sale will last.