Arkham Horror
What is the unstable space?
The rulebook's Unstable Space section defines it this way, including the starting-space fallback.
- Arkham Horror rulebook · Rulebook · Unstable Space
- Arkham Horror rulebook · Rulebook · Steps of the Monster Phase
- Sethala · Community · 2018-10-28
- Geekboxing · Community · 2018-11-01
The unstable space is read from the doom icon on the newest card in the event discard pile. If that discard pile is empty, the scenario's starting space takes its place.