Rotoshift

Flip the coloured blocks to clear the grid!

Move the black square around the grid to clear all of the coloured squares. Each different colour exerts a different pull or push force on the black square, clicking them will flip them to another colour. When the black square lands on a coloured square it erases it from the grid.

Originally made in December 2013 as part of #1GAM One Game a Month

Certainly not my best work, but I'm making it available for the sake of preservation!