Portalnauts 

developed by GamesPlusJames.  

“A 2D platforming action adventure game featuring multiple characters, each with unique abilities, using their skills to fight an evil invading force all across the multiverse. Players will travel through the game recruiting and unlocking characters to help tackle the increasingly challenging worlds and unique bosses that lie within.”

[Back on Kickstarter]  |  [Vote on Greenlight]

via /r/gamedev