What is the predominance test in gaming law?
Short answer: The predominance test asks whether chance or skill predominantly determines the outcome of a contest. Most states use it to separate lawful skill contests from illegal gambling, but the way each state applies it varies widely.
Under the predominance (or 'dominant factor') test, a game is gambling if chance predominates over skill in determining the result, assuming the other two elements — consideration and prize — are present. A meaningful minority of states use a stricter 'any chance' or 'material element' standard, under which even a modest chance component can make a game gambling.
Applying the test is fact-specific. Regulators and courts look at whether outcomes converge toward skilled players over repeated play, whether the player's decisions materially change expected results, and how the matchmaking, randomization, and scoring work under the hood.
Because the standard differs by state, the same game can be lawful in most of the country and prohibited in a handful of jurisdictions. That is the core reason operators commission a state-by-state analysis rather than relying on a single national conclusion.
Related deep-dives
Updated August 12, 2026. General information only—not legal advice for your specific situation. For advice on your facts, book an intro call.