Final Fantasy 7 on the PlayStation had a Chocobo breeding mini-game. Chocobo were a type of flightless bird and by breeding there was a chance to get birds with different characteristics, denoted by different colored feathers, which granted you access to different parts of the game.

You know, when I think back to FFVII (I never played any others after this). Trying to breed the correct chocobo is probably the worst part of the game. For the gold, did you not need a special potion or something (and many guesses) bred with different colours of chocobo? It makes stressed just thinking of it.

It would solve the hacks and return the value of shiny and perfect IVs pokémon, someone must build that solution.

Wouldn't be too surprised if something like that is in the works at Nintendo or The Pokemon Co.

If a fan made this and hosted the web frontend to the contract on ipfs (initially hosted just by nodes behind Tor, and then pinned/rehosted by many users), then Nintendo would have a very hard time taking it down, even if the original creator was known to them.

Indeed, it would be nice to actually test the censorship resistance of these platforms. Although it will have to get quite big for Nintendo etc. to care. Then you have the side-channel attacks or rather entry attacks, where it would be easier to take down any mobile apps that use this as a backend. We shall see.

A friend of mine once worked on a prototype for something like that.