It's time for another Humble Flash Bundle, which expires on Thursday and offers an eclectic mix of games from publisher Surprise Attack.
Beating the minimum (60p) will net you Critical Mass. Party Of Sin, Postmortem and Zombie Tycoon II. I've heard reasonable things about the first two. However, beating £4.39 will also unlock OTTTD and Megabyte Punch, both of which I recommend. Thanks to jaystan @ HUKD!