ADDITIONAL RULES
The game type controls the order of throwing in and transferring cards. An additional rule changes move validation, match pace, or the end condition.

The lobby filters can combine a game type, fair-play validation, and the draw condition.
Fair
Only cards allowed by the standard rules can be played. An invalid move will not be accepted.
Fast
Each turn lasts 15 seconds instead of the standard 30. When time runs out, the game performs an available automatic action.
Draw
If every remaining player gets rid of their cards at the same time after the final round, the match ends in a draw. Without this rule, the last durak is determined in the same situation.
When Fair is not selected
A player may try to throw in a card of a different rank or defend with a card that does not beat the attack. Opponents can report that card:
- a confirmed report prevents the caught player from cheating again for the rest of the match;
- when the round state allows it, the invalid card and related unbeaten cards return to their owners; an already completed pair may remain on the table;
- an incorrect report uses one attempt;
- after three incorrect reports, no further reports can be made in that match.

Before checking the card, the app asks for confirmation and explains the attempt limit.
The Fast and Draw rules do not enable fair move validation on their own.
Automatic selection
The Random setting asks the system to choose one of the available additional rules when the table is created. The chosen rule is shown in the lobby.