Infernal Machine

The Infernal Machine is an end game quest feature introduced in the v1.0.5 patch. The feature was teased pre-patch in several developer blogs[1] and interviews[2][3], which gave only vague details and hints about the content and creation of the feature.

First Description

The first word of the Infernal Machine came in a Patch 1.0.5 Sneak Peek developer blog post on September 13, 2012[4]. The brief quote is below:

New Event: Infernal Machine
The Infernal Machine is a device that will allow level-60 players to battle “uber” versions of some of Sanctuary’s most nefarious bosses. While the rewards for defeating these bosses will be great, some assembly is required.

Additional Details

More information was released in a pair of developer interviews with Jay Wilson and Wyatt Cheng, posted on IGN[5] and gnn.gamer.com.tw[6]. Those details, quickly summarized:

To unlock the Infernal Machine players will have to gather ingredients from all four acts by killing the Key Wardens. (Apparently even longer and more involved than Diablo 2′s Pandemonium Event.)

The four compoents required to assemble the machine are found in:

Act 1 - Goat Nutant Key Warden - Fields of Misery
Act 2 - Dune Dervish Key Warden - Dahlgur Oasis
Act 3 - Morlu Spellcaster - Stonefort
Act 4 - Infernal Machine Plan - Silver Spire

Once the keys and plan are acquired the machine needs to be assembled.

You now need to head to the Heretic's Abode (see video)
Once constructed, one of three portals will open up randomly.

The three realms include:

Discord - King Leoric and Mahgda
Chaos - Ghon and Raknoth
Turmoil - Siege breaker and Zoltun Kulle

The machine will only work once and open one portal. To open another portal you need to reconstruct the machine again.

Drops include the Vengeful Eye, Writhing Spine and Devil's Fang. These are required to create the Hellfire Ring.

The Infernal Machine level has “a completely new architecture” (tileset?), but no new bosses or monsters.

The Infernal Machine reward is a new Legendary ring (Hellfire Ring) only available from this quest. The biggest news is that it will Bind on Account. So no trading or selling or gifting, but you can use it with other characters on your account.

Infernal Machine Videos