If you've ever watched Highlander then you'll know that there can be only one - one person with all the power, and all the glory.

That's what Only One is all about too, except it's not a cheesy film featuring Christopher Lambert and Sean Connery. Instead, it's a pixel-art arena brawler for your iOS device.

So, what do we make of this retro-tinged, blood-thirsty battler? Find out by clicking the play button on that video down there.