Build garage · 7 min

Eval arena

Golden cases, graders, and ship gates you can break.

Arcade: 0 XP · 0d streak — clever clears earn up to ★★★.

Missions + free play. On phones: swipe missions, expand Controls when needed.

Sandbox · deep mode

Build a tiny golden set, pick a grader, flip model versions — ship only when the gate is green.

With contains grader @ 75%, model v1 should pass the gate.

Controlstap to expand

GraderPass threshold75%Model version

Golden cases (toggle to include)

Cookie bake time? → 12 minutesStore hours? → 9am–8pmPhone policy? → bags during classRefund window? → 14 days