The colour-tapping casual puzzler Omicron has been on the App Store for a couple of years now. However, clearly bored by the flat visuals and limited modes of the original, the devs have decided to completely overhaul and re-launch the game via a recent update.

The core gameplay remains the same as always. You are presented with a colour at the beginning of every round. It's your job to tap every matching tile that appears, with the intention of clearing the screen. Successfuls taps add valuable seconds onto the timer. When the clock hits zero, it's game over. Simple as that.

As you progress, the coloured tiles begin to cycle at a faster and faster rate. This forces you to react at an increasingly brick pace, until such a time as you fingers or brain give out and you run out of time.

It's fun, too. Good, clean, and immediate fun. What's more, the flat square tiles have now been replaced with sexy shaded cubes. In fact, the whole visual style of the game has been polished up, giving the game a rather classy sheen.

You'll also get two new game modes: Arcade and Versus. Arcade mode gives you five lives, and penalises every time you hit an incorrect colour. There are no rounds. Instead, the speed gradually increases till you inevitably stab out your lives.

The versus mode is where the fun is truly at, however. With each player taking charge of one half of the screen, you must outpace your opponent's taps in a head-to-head battle. Acting quickly will immobilise some of the other player's tiles. In our experience, this leads to some delightfully heated exchanges and explosions of colourful language.

Power-ups such as slowdowns add a little depth to the proceeding, tempting you to prioritise some tiles over others. You can also gain combo multipliers by clearing more than one block at the same time.

It's all very basic, simple stuff, but that doesn't make it any less enjoyable. Though we're uncertain what shelf life Omicron will have, its solid casual game deliver with style and class. If you need a quick pick-up-and-play party title, look no further.