I tested the Fibonacci roulette strategy for 50 sessions

So, I ran the Fibonacci progression on European roulette over 50 sessions (mostly 150–200 spins each), betting on red/black.

For clarity, Fibonacci sequence:

• 1, 1, 2, 3, 5, 8, 13, 21, 34…

After each loss, you move one step forward. After a win, you move back two steps. On paper, it looks smoother than Martingale because growth is slower. If base unit = $10, then after 6 consecutive losses your stake becomes:

• 1 → 1 → 2 → 3 → 5 → 8 → 13

So $130 on the 7th bet. Not doubling, but exposure still increases. European roulette house edge ≈ 2.7%. Expected value per spin:

EV = -0.027 × bet size.

Over ~9,000 total spins across sessions, the math played out predictably. Short streaks (3–4 losses) were manageable. But 6–8 loss streaks (which statistically occur more often than intuition suggests) pushed the sequence high enough to wipe out previous gains.

Net result after 50 sessions: negative. Not catastrophic, but steadily declining bankroll. The system reduced emotional panic compared to Martingale, but it didn’t eliminate variance risk. The house edge still compounds over volume. So, Fibonacci feels structured and intelligent, but it’s still just a bet progression layered over negative EV. Not a long-term edge.