PROOFMARK
A game from Core Systems Asset Factory. Genre: Puzzle. Paid; free browser demo on the page.
PROOFMARK is a game, paid, with a free browser demo on the store page.
PROOFMARK is a real 32 KB Game Boy deduction game: work out each day's hidden rule from 5,760 generated coins. The free browser demo is days one and two. You are the assay master at a mint. Each day a hidden rule decides what "genuine" means, and it is a rule about what you can see on the coin: its shape, how its field is divided, which family of charge is struck on it, how many, whether it carries a rim.
You are never told the rule. You work it out. The loop Study. Verdicts are given to you free, and the day card tells you how many specimens that is before the day begins Assay. Eight specimens, graded. Mistakes cost standing, and you only have five Reveal. The rule is stated in plain words, next to a coin that satisfies it Every specimen you have seen today sits in the ledger, so the day is not in your head.
Read across the passes for what they share and across the breaks for what they do not. The promise the cartridge makes By the time the first graded specimen reaches your bench, the evidence you have been shown narrows the rule to exactly one possibility among the rules that day can use. Reason from the ledger and the honest answer is never a guess.
AI disclosure, as the store page states it: AI Assisted, Code, Graphics, Text
Paid · free browser demo on the page · Get it on itch.io. Files, screenshots and the full description are on the store page.