The Sims 2 For Mac
Aspyr Media and EA put out a joint press release yesterday announcing Aspyr's conversion of The Sims 2 to Macintosh. Information on the game is available via Aspyr's site, and will soon be available for preorder. No information yet on when the game will be available on the Mac platform.
I don't think it really needs to be more difficult, although it does double your testing/QA.
Platform-independant things like SDL, OpenGL, and OpenAL work quite well on Windows, Mac OS X, and Linux... but almost nobody seems to want to use them when developing a commercial game. Know anyone using OpenGL for a game that isn't based on one of id's engines?
- chrish