Jade — How to play & pay table

Everything about the game: how it plays, what each combination pays, the RTP, and how every round can be verified on-chain.

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Jade

One press cuts a stone, your level names the gems

House Edge: 4%

Jade is an instant gem slot with a memory: every player carries a persistent level from 1 to 5, stored on-chain. One press cuts one stone, and the chain draws a gem from your level's drop table — the common Stone loses the stake, the rare gems pay up to 5000× at the top level.

Levels and the lapse rule

Drawing Tourmaline, the 10× gate gem, climbs you one level; each level up opens a richer table — 10× tops level 1, 5000× tops level 5. Levels lapse when idle: 24 hours without a cut drops levels 1–4 back to level 1, and level 5 holds for a week. The lapse runs on the blockchain's clock and is applied by the program at your next bet; the board shows the last level the chain reported.

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Fairness

The draw is not made by your browser. The chain produces verifiable randomness (Chainlink VRF on Arbitrum, Switchboard on Solana — committed before your bet and verified at reveal), and the gem is drawn from it with one modulo over a million walked down your level's drop table. Take the published value, run the same division, and you get the same gem. All five tables are generated from a single source, live in the program, and return exactly 96% — a 4% house edge, the same rate the original charges.

Randomness by: Chainlink VRF · SwitchboardContract operated by: DODEN.IO

Frequently asked questions

How does Jade work?: Set your stake and press one button — there is nothing to choose. Each press cuts one stone and the chain draws a gem from your current level's drop table. Rarer gems pay heavier; the common Stone (30.00% of every cut, at every level) loses the stake.
How do levels work?: Every player has a persistent level from 1 to 5, stored on-chain. Drawing Tourmaline (the 10× gate gem) climbs you one level; higher levels unlock richer gems — level 1 tops out at 10×, level 5 at 5000×. The program stamps your level into each bet at lock time; nothing outside the chain can set it.
Can I lose my level?: Yes, by not playing. Levels 1 to 4 lapse back to level 1 after 24 hours without a cut; level 5 holds for a full week. The lapse runs on the blockchain's own clock and is applied the moment you place your next bet — the exact rule the on-chain program runs, which the interface only mirrors.
Can the draw be tampered with?: No. The randomness comes from a verifiable random function — Chainlink VRF on Arbitrum, Switchboard on Solana — committed in advance and verified by the program at reveal. From the published value, the gem is drawn with exactly one modulo over a million and a walk down the level's drop table — run that one division yourself and you get the same gem.
What is the return to player?: Exactly 96% at every level (a 4% house edge) — the same rate the original charges, not a penny more. All five drop tables are generated from a single source, live in the on-chain program, and every probability and multiplier is printed on the board — the number on the label is the number paid.