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+# Spatial & Temporal Coordination Puzzles
+
+Spatial-temporal coordination puzzles require solving problems by managing state or actions across **separated contexts**. Unlike observation-based puzzles (learning within one context) or gathering puzzles (collecting for synthesis), these demand simultaneous or sequential manipulation of variables in distinct domains that interact through defined rules.
+
+The core mechanic is **Coordinate Across Boundaries**: the player must understand how changes in one context (temporal period, spatial dimension, character perspective, or moment in time) create effects in another, then execute actions respecting those causal chains.
+
+## What Makes This Category Distinct
+
+| Feature | Spatial-Temporal Coordination | Other Categories |
+|---------|------------------------------|------------------|
+| Context | Multiple separated domains interact | Single unified context |
+| State Management | Changes persist and propagate across boundaries | Changes localized to current context |
+| Timing | Often requires sequencing or synchronization | Order may not matter |
+| Cognitive Load | Track interactions between contexts | Track within one domain |
+
+## Subtypes
+
+### [Cross-Temporal Causality](puzzles/cross-temporal-causality.md)
+Actions in one time period directly affect another period's state, requiring the player to understand temporal causal chains and plan across eras.
+
+### [Cross-Realm Logistics](puzzles/cross-realm-logistics.md)
+Dimensional or alternate-world variant where objects, information, or states must be transferred between parallel spaces with different accessibility rules.
+
+### [Multi-Character Coordination](puzzles/multi-character-coordination.md)
+Synchronized or sequential actions across party members or switchable characters, often exploiting each character's unique abilities in tandem.
+
+### [Timed Consequence](puzzles/timed-consequence.md)
+Urgency framed narratively rather than through UI timers, requiring the player to complete sequences before story-driven consequences trigger.
+
+## Design Patterns Across Subtypes
+
+1. **Boundary Rules Must Be Clear**: Players need explicit understanding of how contexts interact (time travel causality, which items cross realms, when characters can communicate)
+
+2. **Feedback Shows Cross-Context Effects**: Changes should be observable in both source and target contexts to reinforce the coordination mechanic
+
+3. **Constraint Creates Tension**: Limited transitions between contexts (few time jumps, restricted character switching, one-way realm portals) force meaningful sequencing decisions
+
+## Examples Across Games
+
+- **MI2** (Cross-Temporal): Time-travel puzzle where future actions enable past discoveries
+- **KQVI** (Cross-Realm): Transferring objects between human world and faerie dimension with different physics
+- **Curse of Monkey Island** (Multi-Character): Coordinating Guybrush and the Elysian Fields' residents simultaneously