Source
Use the following steps to run Tuxemon on Mac OSX Yosemite from source:
1. From a terminal, install homebrew: ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2. Instruct homebrew that you want to use python, then update. brew tap Homebrew/pythonbrew update
3. Install homebrew's version of python as it is newer/better than the default: brew install python
4. Install the dependencies for pygame: brew install sdl sdl_image sdl_ttf portmidi hg git
brew install sdl_mixer --with-libvorbis
5. Install all of the dependencies via pip: pip install pytmxpip install pillow
pip install netifaces
pip install six
pip install neteriapip install hg+http://bitbucket.org/pygame/pygame
6. Download the latest development version of Tuxemon here and extract the archive to a folder.
7. Run the game by running ulimit -n 10000; python tuxemon.py
from a terminal.