Under the Surface is the third expansion for Among Cultists.

Enter the deadly ice in Antarctica and sear for Organism 46-B. This map introduces new mechanics: loot to equip & the awakening of Organism 46-B, which will change the endgame conditions.

Also some new roles!

Among Cultists, a unique social deduction experience, inspired by the masterpiece AMONG US from Innersloth!
Combining board game elements with traditional social deduction, players are either Investigators or Cultists and move around the board, triggering events, actions and encounters. Investigators have 10 rounds to reach the necessary victory points or vote out all the Cultists. The Cultists have 10 rounds to sabotage or kill the Investigators.

https://youtu.be/qu5Vk5YlOyw