From there, that source code was used to produce the browser port. You can check out the original Diablo on browser here. Just know that it’s not the full game.
Instead, it is a shareware version of Diablo which limits players to only one of the three character classes, and the first two areas of the dungeon.
However, if you own the original game, which can be purchased on GoG, then you can drop the original DIABDAT.MPQ file into the browser page and start playing the full game right there. So anyone looking to play the full version of Diablo for free will have to look elsewhere.
Still, if you find yourself bored at work this is a really easy way to get a quick version of Diablo up and running on your computer with minimal fuss.Meanwhile, Blizzard is hard at work on Diablo 4, as well as a mobile title called Diablo Immortal. Matt Kim is a reporter for IGN. You can reach him on Twitter.