YC and Olam placed 50 AI agents in Minecraft for three hours to build a community. They exchanged about 5,900 messages and assigned roles but struggled with survival and coordination, including concentrated deaths on the first night. Separately, Sol with Codex won six of seven Mindustry games against Opus with Claude Code. Both models and execution tools differed, and related discussion highlighted latency and interface effects. The released setup supports investigating coordination failures, not isolating general intelligence or establishing a model-only ranking.