Version 1.0. In force from 16 September 2026. This document explains how outcomes are produced and priced on cryptora.gg. It forms part of the General Terms and Conditions.
1. Outcome generation
1.1 Outcomes are produced on our servers using a cryptographically secure process. For provably fair games, each round derives its result from a server seed, a client seed and a monotonically increasing nonce, combined using a keyed hash function. The result is a deterministic function of those inputs.
1.2 A commitment to the server seed is published to you before play. The seed itself is revealed when it is rotated, so that every historical round played under it can be recomputed and checked independently.
1.3 You may supply or change your client seed. Changing it rotates the seed pair and resets the nonce.
1.4 Outcomes are determined at the moment the round is accepted by the server. Nothing about your balance, session length, wager size, tier, bonus status or previous results influences an outcome, and no outcome is adjusted after the fact.
2. Verification
2.1 Each settled round exposes the server seed hash, the revealed seed once rotated, the client seed, the nonce and the derived result, so that you can reproduce the calculation with any standard implementation of the hash function.
2.2 Use of the verification tools is voluntary. A round is not invalid because you have not verified it.
3. Return to player and house edge
3.1 Every in-house game is configured to a theoretical return to player of 98.00%, equivalent to a house edge of 2.00%. Where a specific bet type, risk level or side bet has a different published return, the figure shown on the game page applies to that bet.
3.2 Theoretical return is calculated as the expected proportion of total amounts staked that is returned as winnings over an unlimited number of rounds, assuming the published rules and, for games involving decisions, the stated strategy. Games such as blackjack have a return that depends on the decisions the Player makes; the published figure assumes the stated basic strategy, and weaker decisions produce a lower return.
3.3 Theoretical return is not a promise about any session, day or month. Short-run results vary widely in both directions. A Player may lose the entire amount staked.
3.4 Displayed multipliers are the multipliers used to settle a winning round. Where a multiplier is displayed rounded, the settlement uses the same rounded value, so the amount credited equals your stake multiplied by the multiplier shown.
4. Testing and monitoring
4.1 The mathematics of each game, including every paytable, risk level and board configuration, is covered by automated regression tests that recompute the theoretical return from the settlement arithmetic and fail our build if any game deviates from its configured value.
4.2 We additionally monitor realised return over rolling windows against the configured target and investigate statistically significant deviation.
5. Errors and malfunctions
5.1 The record held on our servers is the definitive record of every round. If the display in your browser differs from that record, the server record prevails.
5.2 A malfunction, defect, misconfiguration or communications failure voids all affected pays and play. Where such an event produced a payout inconsistent with the published rules, the payout is void and may be recovered, and stakes on void rounds are returned.
5.3 Knowingly continuing to exploit an error is a material breach of the General Terms and Conditions and of the Acceptable Use and Fair Play Policy.
6. Game rules
The rules, minimum and maximum stakes, maximum payout and paytable of each game are published on that game's page and form part of these terms. Where a game imposes a maximum payout, it applies per round irrespective of the multiplier reached.
7. Contact
Questions about a round or a verification result: support@cryptora.gg. Please include the round identifier and the time of play.