The lead up to the release of EDGE Extended by Mobigame has been an interesting one frought with some legal battles that, while amusing in some ways, has been frustrating to witness as an external observer (let alone as a company caught up in it). Thankfully the sequel to the original EDGE title has been worth the wait and fans of the original have more than a few surprises in store for them.

Much as the name suggests, EDGE Extended bolsters the original gameplay with some new power-ups and features while retaining the same core concept of attempting to collect all the 'prisms' scattered around the level in the fastest time possible.

This is made harder by limitations such as only being able to move in one of four directions and only being able to step up to a new height one block at a time. Movement is further limited by blocks surrounding you, making some areas almost maze-like as they leave pits and angles to trick you in to getting stuck. The game is also not above throwing you a curve-ball by changing the level as you progress, pushing you (and in some cases kicking you) around in unexpected ways.

Keeping control of your hyper-color cube is relatively easy thanks to interchangeable virtual pad, swipe and tilt controls, though you'll want to stick to one scheme to get used to its quirks. Mastering quick turns, balancing on edges for time bonuses and avoiding traps set by the nefarious black cube is much easier once you get a feel for the timing required with each setup.

Despite the game being comprised almost entirely out of grey blocks, the use of different shades along with rainbow-tinted highlights gives the world a vibrant, lively feel. This is further reinforced by the cheeky way in which the levels play with expectations while constantly moving as though it were conscious of you moving along it. Having the whole game smoothly rendered with anti-aliasing for Retina displays is just the icing on the cake.

Conquering the levels currently available won't take too long, though reaching 'S' or 'S+' rankings will put your skills to the test, giving you plenty of reason to keep coming back to learn the optimal routes.

If you loved the original EDGE, you'll want to grab Extended - if you missed out on it the first time around, definitely add this one to your collection.