Irregular playing patterns is a phrase from online casino bonus terms. It describes betting aimed at clearing wagering requirements with as little risk as possible rather than playing the games normally. Bonus funds usually have to be wagered a set number of times before winnings can be withdrawn, and the rules expect ordinary play at ordinary stakes.
Common examples include covering both red and black in roulette, betting on almost every outcome at once, or making minimum-risk bets that are neither trying to win nor playing the game. Casinos treat this as bonus abuse and may withhold bonus winnings or close the account. For operators, the term must be defined clearly in the T&Cs and backed by automated risk rules in the bonus engine, so that decisions are consistent and hold up in disputes.