Matt & Pat should totally play Pat & Mat. Just like that one time Total Biscuit played W.T.F.
That said, despite this being a game for kids, it is little more than a demo. It seems this was supposed to be 5 episodes long, and it only consists of 1 episode. And it can be completed rather quickly. You have 3 mini games, of which only 1 is actually fun, and a very short point and click "adventure" style game.
The main part of the game, which is a short little bit about this duo's car getting a flat tire, is over with in a few minutes. You simply click either of the duo, click on an object, and try to find what another object or set piece to match it with to progress to build a wacky contraption to fix the flat tire. Some of it makes sense, and some of it is strictly in the off the wall fashion that you would expect from a point and click adventure, but with a bit more, albeit easy, trial and error.
Once that is done, you also have 3 mini games to play. A picture puzzle game, a fashion show memory game, and a mini golf game. Of the 3, the mini golf is the only one I found enjoyable. But that is not saying much. This IS a kids game after all.
Should you buy it for your kids? I'd say no. Not at regular price. This game is incomplete, and given the date it came out, will probably never be finished. If you want a nice mini game collection your kids can enjoy on PC without you feeling ripped off, there are far better games.