Heads up: Edge Extended [$2.99] is now free for what we assume will be a limited time. The app is usually $2.99, so you'll be saving a few bucks if you jump on this sale.
Edge Extended, if you're not in the loop, is a re-mix of Edge, which is a block-based puzzle game that tasks you with rolling a cube through dynamic mazes. This version of the game uses a new engine and boasts other bits of unique content including 48 brand new levels and new mechanics to play around with.
Basically, if you like Edge you'll probably dig Extended. We've embedded a video below to give you an idea of what you're about to get into for zero bucks: