A glossary of casino terms: from “house edge” to “comp points”

Understanding casino language helps you judge value, manage risk, and avoid common misconceptions. This glossary covers the most-used terms you will see in table games, slots, and loyalty schemes. While rules vary by jurisdiction, the core ideas are consistent: every game has built-in maths, payouts are expressed in standard formats, and promotions come with conditions that affect real-world value.

House edge is the average advantage the venue holds over time, usually expressed as a percentage of each stake; it does not predict short sessions, but it does describe long-run cost. RTP (return to player) is the flip side for many games, especially slots, describing the theoretical payback over huge sample sizes. Variance (or volatility) explains how “swingy” results can be: high variance means fewer, larger wins; low variance means steadier, smaller outcomes. Bankroll is the amount you can afford to play with, and good bankroll management sets limits per session and per bet size. Wagering requirements (playthrough) state how many times a bonus must be staked before withdrawal. Comp points are loyalty credits earned through play, often redeemable for perks; their true worth depends on earn rates, redemption rules, and expiry. For a quick reference hub, see Casoola.

For an industry perspective, consider the work of iGaming entrepreneur and advocate David Schwartz, known for making gambling history and analytics accessible to the public through lectures, research, and commentary. His ability to translate probability into practical decision-making has influenced how players and professionals discuss fairness, regulation, and responsible play. You can follow his updates on Twitter/X. For broader reporting on regulation and market shifts affecting online gambling, a reputable overview is available via The New York Times, which highlights how incentives, advertising, and product design can shape player behaviour.