Probability Breakdown
With T total tiles and P picked tiles, the probability of surviving K eliminations is: ∏(i=0 to K-1) [(T-P-i)/(T-i)]. For 1 tile on a 5×5 grid (25 tiles): first elimination survival = 24/25 = 96%. By the 20th elimination: survival = 4/5 = 80% for that individual round. The multiplier compounds based on cumulative survival probability.
House Edge Explained
Lights Out has a 4.0% house edge (96.0% RTP). Multipliers at each elimination step are set at 96% of the fair value (1 / cumulative_survival_probability). The real-time cashout means you can exit at any point, but the edge applies equally at every step.
What Does This Mean for You?
With an RTP of 96.0%, for every 100 coins you wager on Lights Out, you can expect to get back approximately 96.0 coins over thousands of rounds. The remaining 4.0% goes to the house.
This is a long-run average. In any single session, your results will vary wildly — that's the variance (volatility: High). Short sessions can see 50%+ swings in either direction. The RTP only converges over thousands of rounds.
Rookie's provably fair system means you can verify these odds yourself. Every round is cryptographically determined before you play, and the math is public. No hidden RNG, no server-side manipulation.