Observed arrival · 2026-09-26
Marble Alchemy makes the AI show its work
A free browser roguelite turns an AI-written daily challenge into a marble game played with deterministic physics.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Browser-game players curious about AI mechanics
- Worth noticing
- The page reports separate test scopes for the two builds and links to raw reports, source, and release checks.
Field notes
The AI-directed version pairs a narrative challenge with a validator that restricts the playable rule to three mechanics, then runs that rule locally rather than making opaque per-frame model calls. A separate deterministic build provides a comparison point. The page reports different test scopes for the two versions and links to raw reports; it also describes a recording with an attached SHA-256 hash and a five-stage run completed in 58.7 seconds.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue