Alterum Speak Your Spells. Trust No One

The rules are simple to explain and hard to live with. A team arrives at a new site, finds the colleagues possessed, and one of your own group is altered. From there it is talking, watching and accusing. You have what you need to expose the traitor. The question is whether the others will believe you before the traitor talks them out of it. If you like Among Us but wish it came with dread, jump scares and spells that actually work, this is that argument settled.

Alterum puts your group in one match with two roles running at once. The loyal explorers investigate, trade theories and try to survive the ritual together. The altered one blends in, sabotages and kills, pretending to be one of them the whole time. The co-op and the betrayal share the same rooms, the same spells and the same timer, so every round is a conversation with a knife hidden in it. Quick-time events keep the danger physical when talk stops working.

Spells here are not buttons. You speak them aloud, and the words do things: a door opens, a trap triggers, an enemy falls. That one rule changes everything around it. Casting is a sound everyone hears, so every incantation is evidence, and the altered can use the same voice to lie. It turns a horror expedition into a parlour game where the parlour can kill you. Say the wrong word at the wrong moment and the consequence is real, for you and for everyone standing nearby.