While the world - ok, we Brits - continues to reel from the App Store price changes, popular puzzler Gears has been reduced to 99c. Hurrah!

Crescent Moon Games's ball-roller won plenty of plaudits on release, most notably, of course, a 5 out of 5 from this very site. And with its luscious visuals and tight swipey-swipey or tilty-tilty controls, it should be easy to see why.

To complete Gears is no small task, since it contains 27 levels of challenging 3D puzzles, centred on manoeuvring a ball around a screen full of cogs.

Gears also features Game Center support, so bad winners can wipe their high scores in their rival’s pathetic face.

Who knows when Crescent Moon will take their game out of reverse - ahem - gear and raise its RRP again, so get in quick.