The Last Stand, a Free Modification for Natural Selection 2 is now available to download on the Steam Workshop.
This Mod requires a copy of Natural Selection 2 to play, Available to purchase on the Steam store.
Buying a Copy of Natural Selection 2 gives you access games available to play on Spark, an in house Game Engine developed by Unknown Worlds Entertainment.
Sounds more like Brian is a massive Teenage Mutant Hero Turtles fan ^^
Excellent addition to the game and a nice introduction to the game builder. That's pretty quick building/publishing. I wonder if there are other games licensing this engine? Spark Engine is pretty cool and seems to have excellent tools.