Monster Snack is an auto-runner with a small twist: to keep running (well, flying) you need to match the colour of the gems flying past your ship, to the colour of your engine.

On paper that might be quite an easy task, but as you begin hurtling forward at great speeds, with the ever-present threat of a giant fish behind you that just waiting for you to run out of power so it can eat you whole, it's a whole lot trickier.

Here's my hands-on with Monster Snack, which is out right now on iPhone and iPad.