This unofficial fan-created Mac OS X build of Spelunky 1.0 is made without support or warranty. It was made in Game Maker 7 for Mac v7.5.86.

To reproduce the musical pitch-shifting effect caused by the Ghost, I used the Caster audio extension by Marius Utheim (http://moacube.com/resources/caster-multi-platform-ogg-extension-for-gamemaker/). 

This is version 2 of this port. Fixes from the previous version:
* Recompiled using v7.5.86, which should provide noticeable speed improvements on some systems.

Known differences with the Windows version:
* This is based on the source code of version 1.0, and currently lacks the minor bugfixes and balance tweaks of Spelunky 1.1. Spelunky 1.1 is made in Game Maker 8 instead of Game Maker 7, and thus, its source code file format is incompatible with Game Maker for Mac.
* Due to Game Maker for Mac's current limitations, fullscreen mode comes in only one size, which fills the entire available screen space. Furthermore, due to a bug in v7.5.86 related to drawing surfaces in fullscreen mode, fullscreen and windowed mode can not be toggled in-game with F4.
* Due to a bug in v7.5.86, the Config application is unable to have a 'Start game on exit' feature.

-Leon Arnott.