The Unholy Alliance update was announced during Friday's Devolver Direct

It's the Cult of the Lamb, but make it a goat. That's right, developer Massive Monster is adding two-player multiplayer to Cult of the Lamb — with a goat. Announced Friday during Devolver Digital's Devolver Direct, the free update, called Unholy Alliance, will be released on August 12.

In the update, the Lamb and the Goat will be able to complete the entire Cult of the Lamb campaign in local co-op. Massive Monster said in a press release that Cult of the Lamb's fishing and dice game, knucklebones, will also have a two-player twist. The lamb and goat will be able to "switch weapons, deal extra damage when fighting back-to-back, or deliver a critical hit if their attacks are synchronized," according to the press release. But it's not just co-op: Solo players will have some new powers and abilities to test out — in addition to "new tarot cards, relics, buildings, wool, follower traits, follower quests and other secrets to discover."

Massive Monster and Devolver Digital released Cult of the Lamb in 2022, and it was a huge hit. Since then, Massive Monster has released two free updates: the infamous "sex update" Sins of the Flesh and a combat-focused expansion called Relics of the Old Faith.