Roulette

Three wheels dominate online roulette: European (single zero, 2.70% house edge), French (single zero with La Partage returning half on even-money losses, 1.35% edge) and American (double zero, 5.26% edge - avoid). The choice of wheel matters more than any betting system.

Lightning Roulette (Evolution) keeps the European wheel but adds multipliers of 50x–500x on random straight-up numbers, in exchange for a slightly higher house edge (~2.94%). Most players find the trade-off worthwhile.

All systems - Martingale, Fibonacci, D'Alembert - fail against the table-limit ceiling and the house edge over enough spins. They can shape variance, not erase the edge.