What happens when your "distributed system" is 18 PlayStation Move controllers on Bluetooth? Observability challenges web developers never face.

JoustMania is an open-source party game where players jostle motion controllers. Complex execution: multiple Bluetooth adapters, battery-powered devices, sensors at 100Hz. When a player complains their controller "felt different" - how do you debug it?
Challenges:
- Sampling data from 18 controllers without overwhelming telemetry
- Correlating hardware events with gameplay
- Managing high-cardinality data
- Debugging problems at 2 AM conventions

Solutions:
- Context-aware flags responding to battery, skill, system load
- Intelligent sampling capturing critical events, dropping noise
- Trace correlation between hardware and game logic
- Using OpenTelemetry to prove games are "rigged" (or not)

Demo: Change behavior via GitHub-synced flags, show real-time controller telemetry, reveal emergent behavior in physical systems.