Developer: Nitrolic Games
Gravity+ also has a level editor you can download to make your own creations!
Gravity+ is surprisingly functional and delivers a solid experience. The overall design and presentation does feel a bit rough around the edges, but when you develop a tempo the levels slowly become addictive. The limited content on offer in the base game is probably the biggest criticism, however taking into account the purchasable level design tool gameplay is potentially unlimited. If you would like a solid game on the Wii U that comes with its own level design tool, Gravity+ is one to consider - provided you're cool with paying a bit extra to unlock it.