Blade
That Man
- AKA
- Darkside-Ky/Mimeblade
Crazy hidden codes and conspiracy theory stuff: http://www.gamesradar.com/mgs-5-fans-are-trying-decode-secret-game-hidden-code/
That seems like a fun thing to do in concept for practicing writing code.
Hide a videogame inside a videogame, but instead of being able to play said game WITHIN the game... make it so that programmers have to make it themselves.