On March 31st 2017, TheZZAZZGlitch released his April Fools 2017 event.
The event being a crafted save file for Pokémon Blue, it being a small game where you need to use memory patching or debugging techniques to beat it.
After you beat the game, a password is generated which allowed you to submit your score to the event website.
The best score (naturally, that score is 31337
) can only be obtained by either patching the key-generation routine ("crackme"), or making your own keygen ("keygenme").
I, personally, did the latter.