The tale of a giant bum, where you have to throw objects so they orbit around it, but don’t get sucked up into the rectal passage. It’s easy at first, but as you get more and more objects orbiting the gigantic arse the chances of them colliding and spinning off in unpredictable directions increases, until – oh no! – one of them (perhaps a cow, or a television) inevitably gets sucked up the bumhole and you lose.

No, not really. Of course GravBot isn’t that game. (Though I think someone should make it forthwith.) GravBot is a puzzle game where you move an oddly charming little robot around and switch the direction of gravity so the lovely little chap can collect items without falling off.

GravBot

He's a simple design, but animated very well.

It’s actually rather lovely. The tutorial messages are signs on the walls, so you can read them or whizz past them as you see fit, the controls work splendidly well and the levels are designed so that they’re simple enough to complete, but harder to complete well.

It’s also free. Free!

The catch is that only first twelve levels are free, the rest are a couple of 59p in-app purchases. I’ve not bought them yet, but I’m going to keep the game on my phone and fire it up next time I’m stuck for something to play. That might be a while, but I think it’s likely I’ll end up playing it again at some point.