Here's a Winner: Throwing Lambs Out of Planes for Sick Kids!
The game involves sky-diving sheep. You're supposed to slam the falling sheep into little colorful stars and try to earn as many pounds (that is, the British currency) as possible before the sheep hits the ground. We don't really understand why and will probably go back to playing Headcase shortly after this.
One charity game we really liked was that rice/vocab thing, though we feel mildly suspicious about its actual ties to a charitable organization.