Crio Games have placed their sandbox, first person, wildlife park/animal sanctuary builder game Animallica on Steam via Greenlight.
You can view a brief overview of the game and the official trailer down below..
“In the near future, after a series of disasters (massive floods, air poisoning and genetic experiments gone wrong), life on Earth is on the brink of a sixth mass extinction. Most of the remaining humanity lives in several fortified cities scattered around the globe while the rest roam the land as bandits or scavengers. Along with a team of scientists you have been entrusted with the task to build and maintain a facility that aims to gather and preserve as many species of animals and plants as possible for a future re-population.”