Most AI agent demos prove intelligence. Very few prove coordination.

In this project, we built Agent Arena: Fact or Fake , a real-time multiplayer game where four autonomous agents collaborate through one shared substrate: Valkey .

This post walks through the architecture, implementation details, tradeoffs, and developer patterns you can reuse.

Problem Statement

An LLM can generate content. But production-grade multi-agent systems need more:

Shared state across independent workers

Event-driven handoffs without tight coupling

Long-term memory that informs future behavior

Observability and recovery under failure

Without these, agent systems become brittle chains of API calls.

System Overview

Agents in this app:

Researcher : generates factual/misleading claim candidates (Ollama)

Writer : rewrites claim into player-facing question (Ollama)

Editor : validates truth + confidence (OpenAI)

Game Master : orchestrates timed rounds, scoring, leaderboard

Players join over WebSocket and answer FACT or…