Sand Reveal
Uncover tiles, find the matching set.
Stratosphynx runs free simulations of online casino games. Every board follows the real rules and the real odds of the format it simulates, and is played with practice points that have no cash value. There is no real money anywhere on this site, nothing to deposit, nothing to withdraw and nothing to win.
Where it comes from
The covered-panel idea is simple enough that it has been reinvented many times: print a result, hide it under a layer that can be removed by hand, and let the person uncovering it learn the answer one piece at a time. Printed versions arrived once a coating could be made that scraped away cleanly without damaging the ink underneath, and the format spread quickly because it needed no machine at all.
Where you meet it today
You meet covered panels on promotional cards, conference badges, advent calendars, classroom reward charts and dozens of mobile puzzle apps. The digital version keeps the physical gesture, which is most of the appeal: the information is already fixed, and uncovering it is the only thing left to do.
The rules
Press and drag across a covered tile to clear its coating. A tile counts as uncovered once enough of it is gone. Uncover the required number of identical symbols anywhere on the board and the round scores at that symbol's multiplier. Every result is decided the moment the round starts, before you touch anything, so the order you uncover in changes nothing.
The maths behind it
This is a sampling question, not a skill question. On a board of T tiles drawn from a pool where each symbol has weight w, the chance of finding N identical symbols follows directly from the pool weights. Because the outcome is fixed before the first drag, no uncovering order improves it, and the reveal is presentation rather than gameplay. Understanding that the answer exists before you start is the point of this family.
If this is your first board
Start on the two-by-three board, where only two matching symbols are needed. Uncover every tile even on a losing round; watching how close the near-misses come is far more instructive than only looking at the wins.
Every board in this family
Each board has its own guide with its own pay table, its own probabilities and the arithmetic worked through with that board's numbers.
| Board | What it changes | ||
|---|---|---|---|
| 🪙Gold Leaf Tiles | 3×3 · Match 3 | Guide | Play |
| ⚡Quick Sands | 3×2 · Match 2 | Guide | Play |
| 🚪Nine Chambers | 3×3 · Match 3 | Guide | Play |
| ✦Hidden Glyphs | 4×3 · Match 3 | Guide | Play |
| 🧭Tomb Map | 4×3 · Match 3 | Guide | Play |
| 🌴Oasis Trail | 3×4 · Match 3 | Guide | Play |
| 🪲Twin Scarabs | 2×3 · Match 2 | Guide | Play |
| 🥈Electrum Panels | 4×4 · Match 4 | Guide | Play |
| 🌟Sirius Reveal | 3×3 · Match 3 | Guide | Play |
| 💎Grand Excavation | 5×4 · Match 4 | Guide | Play |
| 🪔Lamp-lit Panels | 4×4 · Match 3 | Guide | Play |
| 🐟Nile Cover | 5×3 · Match 3 | Guide | Play |
| 👑Royal Tomb MEMBERS ONLY | 5×4 · Match 3 | Guide | Play |
| 🌙Moonlit Tiles MEMBERS ONLY | 4×4 · Match 4 | Guide | Play |
18+
18+ only. Stratosphynx offers free simulations of online casino games for entertainment and learning. There is no real money anywhere on this site, nothing of value ever changes hands, there are no prizes and there is no way to cash anything out. Virtual points have no monetary value and cannot be exchanged. Please play in moderation.