Choose shared-round or individual-round behavior before designing the user interface. The choice changes participation, state synchronization and recovery requirements.
Establish which event decides the outcome
Specify the round lifecycle, bet cut-off, authoritative action time and cash-out decision. The player's button press, network arrival and server acceptance can be different events. Define which one the game uses and how the player is informed of an accepted or rejected action.
Keep the result and accepted action record separate from the animation. The displayed multiplier should not be the only evidence used to investigate a disputed cash-out.
Define the verification claim precisely
If the project includes a player-verification mechanism, document the algorithm, required inputs, when they become available and what the user can reproduce. Explain the limits of that verification.
A reproducible result calculation does not by itself establish correct custody, withdrawal processing, operating permission or the scope of required certification. Avoid using “provably fair” as a substitute for those separate questions.
Test the round boundaries
| Case | Expected evidence |
|---|---|
| Action at cut-off | Accepted timestamp or sequence, rule applied and response |
| Repeated cash-out request | One intended financial effect and a consistent result |
| Connection loss | Authoritative round state and the permitted recovery path |
| Interrupted round | Completion, cancellation or refund according to the agreed rules |
| Delayed wallet response | Recorded obligation and a controlled reconciliation process |
Use the cases required by the actual mechanic rather than assuming all crash games have the same cash-out or cancellation rules.
Scope the production package
Include the mathematics or result-generation specification, game client, server, wallet adapter and test evidence. Agree rights to code and assets, supported devices and release maintenance. Connect the assessment plan to the version being distributed.
Send the round rules and intended verification approach, including the market and distribution requirements.