I was part of the Global Game Jam this year. We made an iPhone game that is yes, in the iTunes store. I think that is titanically awesome for only working for 48 hours.
We're working on a second version with a more complete set of art assets, but you can buy a working copy of the game
here if you're interested in playing RIGHT NOW.
Here's one of the player-characters, Damien Vile. You must try to kill your siblings by influencing subordinates to do the dirty work for you.
DEATH BY RAT POISON
DEATH BY INCONVENIENT ROPE
DEATH BY GARDENING SHEARS--holy crap those were some sharp shears.
Another player-character. She goes by Anastazia Vile. :3
SHE'S DEAD, JIM!
UGH, WHO DID HER MANICURE?!
For the gore-lovers. :P
And I think this is going to be its new logo, but it still needs tweaking to jump out at you from the app store :D