It's a fun little game. Not much to it though - it soon becomes a bit repetitive as you raise money, build room, train goons, raise money...
It's also a shame that the global missions your henchmen undertake are represented by a rather bland map screen where all you can do is sit and watch a timer to see if they succeed, as that's where the fun stuff shoud really kick in. The concept and attention to detail keeps it from getting too stale though.
A cute diversion, but with everything that's coming out in the next month, I wouldn't rush out to buy it. Wait for it to be reduced in price, post-Xmas, and it'll be a much more worthwhile prospect to keep you amused during the Jan/Feb dead zone.