Crane Stack: A One-Button Tower Stacking Game
Drop swinging blocks from a tower crane to build the tallest tower, in one small offline HTML file: Perfect landings in a row pay more, three misses end the run, and the sky turns from day to night as the tower grows. All drawing is Canvas 2D and every sound is synthesised.
Bring the blocks, the site and the sky, and optionally the rules, scoring and feel. The Skill returns a downloadable Skill (the reference game project, a customize guide, headless verification) and one playable example run.
How it works
Your coding agent copies the reference game and follows the customize guide: sky and time of day, block look, crane and site, ground and city, text, rules and scoring, swing and sway, sound.
Everything is built into one small HTML file: all drawing is Canvas 2D and every sound is synthesised.
The game is played headlessly under the sandbox policy: title, start, drops, swinging, Perfect and a chain, a Success, a miss, a tall tower, a tumble, game over, restart and a phone.
Frequently asked questions
Does it call a model or need a key?
No. The Skill gives your agent a reference game, a customize guide and verification; the game itself makes no network calls and calls no model.
Why is the demo sandboxed?
The frame has an opaque origin and no network access, so the scene can’t read anything from this page or reach the internet.
Is the game in English only?
Yes. The page is in two languages; the game’s own text is in English.
Can I change the scoring?
Yes. Lives, scores, the Perfect window and the swing are numbers in one config file; the customize guide names each one.
Does it work on mobile?
Yes: it is one tap, in portrait or landscape. It has been verified under touch emulation, not on real devices.
Why is there no online generation?
Building a new scene needs a model key inside the sandbox, which the backend doesn’t support yet. Run the Skill with your own agent for now.