Immediate playability, canvas physics behavior, active controls, object-count accuracy, responsive presentation, and visual craft.
Gravity Desk
Immediate playability, canvas physics behavior, active controls, object-count accuracy, responsive presentation, and visual craft.
The review judges convincing toy behavior rather than validating a physically accurate simulation or reusable software architecture.
The latest published prompt.
Build a playful one-screen physics toy called GRAVITY DESK. Clicking spawns colorful glass-like marbles that fall, bounce off the viewport edges, and collide convincingly enough to feel satisfying. Include Gravity and Clear controls plus a live object count. Use a single offline HTML file with Canvas and vanilla JavaScript, no libraries or assets. Prioritize smoothness, polish, and immediate playability.
6 checks, decided by a human.
- 01Clicking spawns a colorful glass-like marble.
- 02Marbles fall and bounce within the viewport.
- 03Marbles collide convincingly enough for the intended toy.
- 04Gravity and Clear controls work during active simulation.
- 05The live object count remains accurate.
- 06The single-file canvas experience remains smooth, responsive, and offline.
Published scorecards also apply 5 weighted craft dimensions. Their exact scores and rationale remain attached to each report.