I'm a big fan of downloadable games. I own something like 70 of them on my console, and I like to think that I have my finger on the pulse of what's coming down the digital pipe. But every once in awhile, something slips under my radar -- something like Swarm. When I found out I was going to be reviewing this new $15 title from Hothead Games, I had no idea what to expect. So needless to say, I was pleasantly surprised when I started playing and it proved to be a great deal of fun...