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The daily coin games
A new puzzle each day — Coindle, Coin Detective and Higher or Lower.
Published 22 September 2026 · Last updated 23 September 2026
A new coin every day
The games all run off the same catalogue you are browsing. Coindle and Coin Detective set one mystery coin a day, the same for everyone.
You can play signed out. Sign in and your streaks are remembered.
- Coindle — guess the day’s mystery coin from its properties.
- Coin Detective — identify the day’s mystery coin from a pixelated picture.
- Higher or Lower — is this coin worth more or less than that one? It has no daily limit, so play it as often as you like.
How streaks count
A streak counts the days in a row you have won a game. Win again the next day and it goes up by one; winning twice on the same day adds nothing, and missing a day starts it again from one on your next win. Your longest streak is kept beside it.
Streaks are saved to your account, so they only count while you are signed in.
Learning the rules
Each game explains itself as you play, and How to play covers all of them in one place.
They are a genuinely good way to learn mintages and values — most regulars started by guessing and now know the catalogue well enough to spot an underpriced listing.