Read the odds before you play the board.
Stratosphynx is a free workshop for casino game simulations with an Egyptian accent. Each board shows its numbers up front, keeps to the real rules and the real odds of the format behind it, and never touches real money.
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.
Five families, one question each.
Choose a family, read how it works, then run it until the results stop surprising you. Each has fourteen boards, from the smallest to the largest.
Sun Disc
This family is a simulation of roulette. Pick a sector, a colour band, or odd versus even, then release the pointer. The whole family is one clean probability question with an answer you can compute on paper.
Glyph Match
This family is a simulation of online pokies. Every column shuffles independently. A run of matching icons along a marked path scores. Grid sizes run from a tight three by three up to a seven column board.
Scribe’s Cards
This family is a simulation of casino card games. Fourteen boards built on a standard pack of fifty-two, spades, hearts, diamonds and clubs with the court cards in place. Draw towards twenty-one against the house, hold and redraw for a published pay table, compare two hands, settle a tie, call the next card higher or lower, or clear a board of hidden pairs from memory.
Sand Reveal
This family is a simulation of scratch cards. Drag across a covered tile to clear it. Uncover the required number of identical symbols anywhere on the board and the round scores. Board sizes from two by three up to five by four.
Read, run, read again.
Start with the numbers
Every board prints its grid, its limits and its multipliers on the page before you press anything. Nothing is hidden behind a menu.
Run enough rounds
One round tells you nothing. Twenty rounds start to show the shape. The point of practice points is that you can afford to be patient.
Check what you expected
Each family has a written section on the maths behind it, with the actual formula, not a slogan. Compare it with what you just watched happen.
Stop when you are done
Everything here is a puzzle and none of it is a habit worth building. Support lines for six countries sit one click away in the corner of every page.
No money, anywhere, ever.
Points are a scorekeeping number that lives in your own browser. They cannot be bought, they cannot be sold, they cannot be sent to anyone and they cannot be turned into anything. There is no payment page on this site because there is nothing to pay for. If your points run out you are given more at no cost, because they were never worth anything to begin with.
Choose a board and begin.
Most boards open with no account. An optional free account unlocks the rest and keeps your score across devices.
Browse every board