All the glory goes to the person who's bringing this Blizzard game to other platforms. His Github's account is diasurgical. Now you can enjoy the game on your Raspberry Pi 3 or 4 natively.
For those who don't know, Diablo is a mix of action and RPG that invites us to travel to hell to see our faces with his master and lord. It was released in 1997 for PC and is one of those games that marked a before and after in the video game industry.
It's not yet possible to have it translated into languages other than English, but some people are working on it.
You can download the script to install it, as always, from my project PiKISS.