I installed the FlapPyBird repo from https://github.com/sourabhv/FlapPyBird. I have libpng installed but when i try to run the program with python flappy.py i get
I had the same issue. Installing the following with homebrew fixed it:
brew install sdl sdl_image sdl_mixer sdl_ttf portmidi
Got the info from here:
http://brysonpayne.com/2015/01/10/setting-up-pygame-on-a-mac/