A Hacker News discussion links to an Unreal Engine forum thread about an Unreal Engine 5.9 MegaJam preview. The headline says it is the first Unreal Engine release built primarily with agentic workflows, meaning AI agents played a major role in building it. The snippet only reports that the Hacker News discussion has 1 point and 1 comment, so the source gives no further details on features, scope or how the agents were used. The item is a short community discussion pointing to the forum post rather than a full report.
AI-assisted summary based on the listed source.