What platforms have you played Telltale games on? Now that I tracked down and played the PlayStation 2 version of CSI: 3 Dimensions of Murder (the engine of which was developed by Ubisoft but the assets and story were developed by Telltale), I own games for all platforms Telltale has released games on so far (although saying I own games for MacOS is kind of a given, as anyone who has a PC version of a game (at least from the newer games) from Telltale's website has them on MacOS too :p). However, I've only played Telltale's games on half of the platforms available so far.
I own every Telltale game on PC (and the ones that are available on Mac from Telltale's store too) except for Law & Order: Legacies and have played all the PC versions so far, but not any on a Mac yet. I own CSI: 3 Dimensions of Murder on PlayStation 2 and have started playing it today. I own Sam & Max Season One and Two, Wallace & Gromit episodes 1 and 2, and The Walking Dead episodes 1, 2, and 3 on Xbox 360 and played them. I own Tales of Monkey Island episodes 3, 4, and 5, and Strong Bad 4 and 5 on Wii and have played them. I still haven't played any on iOS, but I have Tales of Monkey Island episode 1 for iPhone, and Law & Order Legacies episode 1 and Back to the Future episode 1 on iPad. I also still haven't played any for PlayStation 3 but I own Back to the Future on PSN (but I haven't had a chance to play it on my sister's boyfriend's PS3 yet).