Pokémon Leaf Edition
tl;dr — Play it!
A rebuilt version of Pokémon Red, but with a Khan Academy theme!
Created at Khan Academy's 4th annual Healthy Hackathon. I created this once I noticed that someone had published a disassembled version of Pokémon and that Khan Academy avatars strongly resembled Pokémon.
You can build the game from source; see INSTALL.md. Building the game will result in
pokeblue.gbc. Play either, whatever you like.
If you don't want to build from source, you can play the pre-built .gbc games in the dist folder. These might be a little out-of-date.
For Macs, I recommend OpenEmu for emulating these games.