Welkin Road is now available on Mac OS X as well and should work on versions 10.8 and newer. Along with this comes update v0.24.3 which addresses the bugs that were found recently.
[b]Changelog:[/b]
[list]
[*]Changed the save location on OS X to ~/Library/Application Support/Welkin Road
[*]Fixed bug where the player could catapult infinitely while grappling the same orbs
[*]Fixed bug that broke respawning when the level was restarted while respawning
[*]Fixed bug that exited the options menu when cancelling a key binding change with ESC
[*]Minor level modifications
[*]Fixed bug where mashing the options button would sometimes lock the game
[*]Grappling a white secret now displays a white beam instead of a red one
[/list]