If you would like to download these games from the app store, click here for platypus evolution, and here for cow evolution.
Both Platypus and Cow evolution are very whimsical games, with platypus evolution being the odder of the two. In both, the objective is to mutate your original organism (cow or platypus) into some sort of convoluted evolved being. You can purchase previously mutated beings with the money you earn from selling their poop. There are several different areas which hold your beings they increase with the size of the "things" residing in them (which can get up to 11,000 km in size). You can make money even when you're away from the game. Additionally you are given a free beginner cow or platypus every 10 (or 5 upgraded) seconds. This is helpful in he beginning, but gets a bit tedious towards the end. The last area that contains your cows or platypuses can hold one of 5 "supreme beings." Below are the images of some that I have already obtained. As I get more I will update the images, but for now this is all. If you have one that I do not have below, feel free to send me an image of it, I will greatly appreciate it.
If you would like to watch a video of either of the games in action, click on the respective images above!