The abominations have escaped, evacuate the facility! We can’t let a single specimen out. Gather resources, build turrets, grab your trusty shotgun and prepare yourself for the madness. Defense: Abominations is a first person tower defense game where you try to survive the abominations stored in the laboratory, as long as you can. Level up to unlock new defensive turrets and weapons while you rank up via online leaderboards. Battle all kind of abominations, from leftovers from a zombie outbreak, to dinosaur clones and creatures from other dimensions.
It's basically the same as their other "game" Time Spatter which was released a few months after this one. It looks like they just got a premade asset pack and switched a few things. From the looks of it there wasn't any "development" except from the creator of the person who made the assets.