Codemasters is the latest publisher to participate in a Humble Weekly Sale and it's another one worth recommending if for no other reason than Overlord (and DiRT!). Name your price for the first Overlord and its Raising Hell DLC, Operation Flashpoint: Red River and Dragon Rising, and Rise of the Argonauts, with proceeds able to go to the UK-based charity SpecialEffect.
Paying $6 or more for the bundle will also get you Overlord II, DiRT Showdown, and DiRT 3. While I've always preferred Little King's Story as my go-to alternative to Pikmin, the Overlord series isn't far behind with its dark sense of humor. And there's no such thing as too much of these games.