A plain reference for RTP, house edge, variance, session size and the difference between entertainment language and mathematical expectation.
Reference table
| Reference item | How to use it | What it is not |
|---|---|---|
| RTP | Use as long-run theoretical return before session emotion. | Not a promise for one session. |
| House edge | Translate RTP into expected cost over repeated play. | Not removable by rituals or streaks. |
| Volatility | Expect larger swings even when RTP looks similar. | Not a sign that a game is due. |
| Session budget | Separate entertainment spend from bills and savings. | Not an investment amount. |
How to use this page
Use the reference before reading a market, promo or trend: context first, risk second, limits third, action optional. It is useful even when the best decision is to skip.


