I started this a month or so ago, and although it was great, it seemed to crash a lot via the USB Loader I was using. And Mass Effect and Batman came along. And other stuff.
Went back to it this week. It’s a surprisingly long game, actually. Although each level is pretty short (some are longer than others, however), there are LOADS of them. I’ve done about 20 so far, and I’m not even half way to the moon yet.
I’m a little disappointed they’ve started reusing the same level themes (hospital, shopping mall, office, etc.), but thankfully things are pretty varied in terms of how each plays.