i built a small playable game in Unreal Engine with Claude Opus 5.5... no blueprints by hand, Claude worked inside the running editor the trick is the live connection, but there's a smart way to set it up: - step 1: Unreal Engine 5.8 + a Third Person project, under source control - step 2: enable Unreal MCP and AllToolsets, start the server - step 3: install Epic's free plugin for Claude Code and start Claude in the project folder - step 4: build a greybox level first: a path, a walled village, a tower you can see from the start - step 5: add the rules: 3 orbs, a locked gate, "You made it", R to restart - step 6: add one enemy, then health, then your attack, one feature per prompt - step 7: only then make it look good: your character, real assets, lighting and every prompt follows the same 4 rules... - say what "done" means - say what must not change - ask for a list of everything it touched - no silent workarounds: if it can't do it, it stops and says so the full course is in th