DeNA Co., Ltd. has Polyform (3D Cube Puzzle) (iTunes Link) for the iPhone, iPod Touch, iPad in the iTunes App Store for FREE (regularly $2.99) for a limited time. This deal expires March 28, 2015.

Polyform is an action puzzle game that takes traditional match 3 gameplay and turns it on its head by bringing it into the world of 3D! Rotate the puzzle around and slot in the blocks to connect 4 like colors before the mass goes critical!