Key Info
Epic released the Unreal Engine 5.9 MegaJam Preview, described as the first Unreal Engine release built primarily with agentic workflows, and it includes built-in support for OpenCode.
Highlights
- New Experimental features ship in this preview, including expanded Unreal MCP toolsets
- Developers can work with AI coding agents directly inside the Unreal Editor
- AI-assisted content creation is part of the release
- OpenCode support is built in, confirmed by an OpenCode developer
- Epic frames agentic workflows as central to how this version was built