European Roulette features a single green zero pocket (0) and 36 numbers from 1 to 36, giving an optimal 97.30% RTP (2.70% house edge). Place inside bets on straight up numbers for 36x payouts, or spread your chips across outside bets like Red/Black, Even/Odd, Dozens, and Columns. All winning pockets are computed deterministically with HMAC-SHA256.