GOG are giving away Torchlight for the next 48 hours. GOG at present do not support Linux as a platform by selling games for it but that does not mean that they will not sell games for Linux in the future. As GOG support Mac OS, the next obvious step would be to support Linux, so support for our favourite operating system can't be that far in the future. To prepare for that inevitable Linux launch, you can pick up Torchlight free of charge and free of DRM from GOG. As the game has a Linux client already in place, it will certainly be uploaded to GOG once they start supporting Linux. Why not vote on one of these while you're at it?