This has been removed from Heroes of the Storm.

A Tristram map was considered for Heroes of the Storm in its 2011 build. Players would fight Diablo in it. The map apparently no longer exists, and Diablo has since become a playable hero in the game.[1]

Notes

The map was based on the town of the same name from the Diablo series.

A town called "Neo-Tristram" exists in the background of Diablo's kaijo skin, likely in reference to the concept of Neo Tokyo. This was changed to "Tristram Labs" in the current skin description.