The mechanics, payout probabilities, and wallet behavior described below are derived directly from the source-bound mathematical evidence and the actual demo implementation. They do not necessarily reflect the terms of any external operator, registered company, or licensed platform that may host a similar game.
Game Mechanics and Rules
Idempotent Stamp uses a matrix-based probability model. Nine fair bits form a 3 by 3 matrix A. A reward is triggered when A squared equals A over GF(2), otherwise zero; the zero matrix is included. The raw reward raised to power 1, 2 or 3 is separately normalized by its exact mean over all equally likely complete draws, giving 96% expected gross return in each mode.
One whole stake is captured per board. There is no Auto, Stop or cash-out feature. Stake buttons are 10, 20, 50 and 100.
Payout and Settlement
Actual payout math and every mode are recorded in the source-bound mathematical evidence. Displayed multipliers are gross coin returns, not profit.
| Mode (Power) | Expected RTP | Measured RTP (Sample) |
|---|---|---|
| 1 | 96.00% | 96.03% |
| 2 | 96.00% | 95.99% |
| 3 | 96.00% | 95.64% |
The expected RTP is 96.00% in each mode. Measured values from simulation samples may vary slightly due to statistical variance.
Wallet and Balance
The demo starts with an initial balance of 1000 virtual coins. An idle balance below 10 can be restored manually to 1,000. This is a manual set action, not an automatic replenishment or deposit. Fractional payout change persists through settlement, manual refill and reload.
The settled balance, including zero, persists locally. However, an unfinished round ends without refund or resume if the page is reloaded.
Controls and Persistence
Stake, mode and refill are locked during active play; sound remains available.
There is no early cashout or automatic queue. One captured whole stake is taken per complete draw.
Identity and Services
The identity of the queried brand is unverified except for individually reviewed primary-source facts. This demo does not establish an official company, account address, app or service.
There is no account login flow and no payment flow in this demo. Clearing cached files may leave local storage data, as the game source uses localStorage for settled balance and fractional carry; this does not establish anonymity or exclude other processing.
Audience and Responsibility
The intended audience for this guide is 18+. This is a guide policy, not a universal legal age or an implemented age gate.
Responsible use is encouraged. This demo does not clinically train behaviour or make losses safe. Please find appropriate local qualified help if needed.
Frequently asked questions
Is the virtual coin cash value?
No. The virtual coins in this demo have no cash value and cannot be withdrawn or exchanged for real money.
What happens if I reload the page during a game?
An unfinished round ends without refund or resume. Your settled balance persists, but the current draw is lost.
How do I refill my balance?
You can manually restore your balance to 1,000 if it falls below 10 while idle. This is a manual set action provided by this guide's demo.
