Alto’s Adventure has been released on Mac, which you can pick up right here for $9.99 USD. Snowman’s founder Ryan Cash let me know via email that this was planned for a while:

“Ever since we launched the game on iOS we’d always wanted to do a Mac version, and we’d actually begun working on it a long time ago. We kind of got tied up with the tvOS version when that launched, and then of course, Alto’s Odyssey. When Apple announced the new Mac App Store at WWDC this year we knew it was time to dust off the code and bring it to the finish line.”