You've completed Where's My Water?, while Where's My Perry? offered you little in the challenge stakes and 100 Floors just didn't satisfy.

If that sounds like you and you're looking for a new puzzle game on the iPad or iPhone, may we suggest Hundreds?

iPhone / iPad

Hundreds is as simple as they get when it comes to puzzle games. Beautifully designed, there are just four colours that make up the game - red, white, grey and black.

That simplicity doesn't stop it being frustratingly addictive, with a learning curve that will have you quietly fuming at your Apple device, while at the same time coming back for more.

So what do you have to do? The aim is to get to a score of 100 by making either a single or - as is more likely the case - multiple circle sizes add up to 100.

The trouble is, of course, that it is never that simple. Let the circle touch another or any element in the game, and it's game over. The more you progress the more the game tries to stop you achieving your goal.

If all that sounds confusing, it is, because Hundreds is difficult to explain, but not difficult to play.

Take the first level, for example. One big circle, nothing against you, and you'll have completed it in seconds. Come level 30 however, and you'll need the timing and the patience of a saint.

With simple, but at times frustrating, gameplay we can't stop picking up Hundreds to have just one more crack at the level to move on to the next. It's something the game is aware of, thankfully, as it allows you to tackle the next 10 levels at any one time, rather than forcing you to be stuck on one you can't do.

The minimalist graphics are eye-catching enough to draw others in regardless of whether they think they should be interested or not. Everyone we've shown has struggled to give it back.

Hundreds isn't about shooting things, or getting to the next ridge to collect that all important coin/butterfly/marshmallow, but a game that none the less still requires a slight hand and an understanding of timing to know when to go and when to stop.

We are addicted.