Building games in Unreal Engine with Claude Opus 5.5
The author shares a full workflow for building games in Unreal Engine 5.8 with Claude Opus 5.5 over a live MCP connection, from greybox levels to importing characters, and notes what it does and doesn't do well.
here's how to build games in Unreal Engine with Claude Opus 5.5 the trick is the live connection to the editor, but there's a smart way to set it up: - Unreal Engine 5.8 + a Third Person project, under source control - enable Unreal MCP and AllToolsets in the editor, start the server - install Epic's free plugin in Claude Code and start Claude from the project folder - first prompt is read-only: have Opus report the level, the actors and the Player Start - build a greybox level before any art: a path, a goal, enough light to read the route - add systems one prompt at a time: rules, enemy AI, health, combat - model characters and props in Blender, rig to the UE5 Mannequin, import and swap them in - play after every batch, commit when it works what it's good at: clear instructions, done in minutes inside the editor what it's bad at: vague requests, and telling you if the game feels good
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