It seems you can gamify pretty much any activity these days – including the process of beat making. TR-REC is a free iOS game from Roland that presents you with a TR drum machine style interface and requires you to make beats based on a visual guide and within a time limit. It’s sort of like a drum machine version of Guitar Hero, with rhythms getting more complex as you progress. It’s not exactly the most musically useful thing we’ve seen from Roland, but it’ll kill a few hours on the sofa.
You can download 100% free TR-REC from the Apple App Store.