Pocket Gamer: Sliding block games are all about slight variations - little twists to the formula that either add something new or take something away. A few of these iterations work, while the rest of them remain too loyal to an old template or wander too far from the familiar, and become forgettable.
Slide Circus adds its new ideas slowly, teasing you with a precise difficulty curve and an enticing lick of paint before sideswiping you with portals, locked blocks, and more. In the process it creates one of the most memorable sliding block puzzlers on the App Store. 8/10