The arena

Four landers, same moon.

The untouched files each model wrote, running live. Click a panel to start it, then click inside and fly with the arrow keys — or hit each build's AUTO toggle and watch its autopilot try to land. Every panel has a RUN SELF-TEST button: the numbers on the scoreboard reproduce right here, in your browser.

▶ Run all four

Every panel is the actual deliverable, not a screenshot. Gemini's build also emitted a separate Node grader script — the only multi-file delivery; it's preserved alongside its app.