Last Mac-related pledge I did was for the (stretch goal) of Carmageddon:Reincarnation Mac/Linux version. That was reached about four years ago. Still, there is not a word about the Mac version. When I asked Kickstarter about it, they basically explained politely it's not their business and pointed me to Stainless Games, who say they first want to finish the PC version. Which is odd since they have declared it final last year. Meanwhile they announced a new, Carmageddon based game for two new platforms to come out this year. Playstation 4 and Xbox One both didn't even exist yet in 2012.
Of course, this guy Moss can't help all that, but of the projects I've backed, too many were disappointing, if they ever materialized at all. I'm done backing a new CD for that cool Indie band that, once backed, is delayed for 2 extra years.