Roulette on the regulation single-zero and double-zero wheels (N.J.A.C. 13:69E-1.7), with a physical ball-and-rotor simulation after Small and Tse (Chaos 22, 033150, 2012): the ball rides the rim, drops, strikes a deflector and scatters into a pocket. Every inside, outside and announced bet, la partage and en prison, every house edge computed exactly, and a lab that tests whether the physics can bias the pockets. An independent reimplementation of the public-domain casino game; play money only, no deposits or prizes.

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