Blizzard finally created a free-to-play MMO for Diablo! Currently in Beta, join your friends and live the story between Diablo II and III. Choose a deadly male or female class:

• Blood Knight
• Barbarian
• Crusader
• Demon Hunter
• Monk
• Necromancer
• Wizard

Battle all kinds of forest minions all the way to hell demons! Also expect the typical environments like Gothic graveyards, deserts and epic castles. Help other players and expect random encounters!

I was able to install Battle.net in PlayOnLinux with ProtonGE8 and run Diablo Immortal. Honestly it will require some patience because of the random crashing. I was unable to run the game on any other version of Proton. The game will consistently crash at start up, but don't give up, just use the System Monitor to kill DiabloImmortal.exe and then launch again. If that doesn't work, just kill all processes in PlayOnLinux and run it again.

For the most part, once it runs and you are in-game, you can easily play for an hour. Sometimes it randomly crashes, other times it just runs fine.

Specs:
Mint 21.1 64-bit
GeForce GTX 1650
Nvidia 530
ProtonGE8
PlayOnLinux 4.3.4
Wine 8.0 64-bit
DXVK 2.1