A developer opened Unreal Engine with Claude Code and had a walkable city running in 2 hours
Build time: 2 hours
Hardware: one laptop
Lines written by hand: none
Instead of dragging assets and wiring blueprints by hand, he left the terminal open at the bottom of the editor and let Claude Code place the assets and write the logic while the engine rendered
Instead of a test cube on a grey plane, the build is a full metropolis: skyscrapers, highways, live traffic, crowds, and a camera that drops from the clouds to street level in one shot
He runs a character through it in third person, walking, sprinting, flying, with a control panel wired to the left of the screen
Sometimes all it takes is to stop building the thing and start describing it
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