Mercury Shift 2D was originally meant to be a two-player only co-op puzzle platformer. It was developed about a year ago. Its mechanics are comparable to those of Trine, Tomb Raider: Guardian of Light or The Cave. The game itself has a very unique mechanic which we call the "shift". It allows you to transfer your mass/energy from one character into the other anywhere in the game. One of our biggest goals was to have cooperation between players (or the characters) and really relying on each other to solve a puzzle and get through a level. Right now we are working on the latest version of the build, Mercury Shift 3D(working title). The 2D version served as a very good "prototype" where we could test our gameplay dynamic. We released the 2D version on Kongregate and got some pretty cool playtest results with the help of google analytics. So, check out the game, give us feedback and critize the game. We really appreciate it!