Limbo
Name a target multiplier and see whether the round clears it. The most transparent game in crypto casinos, playable free with seeds you can verify.
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Result must reach 2.00× to win
See the maths
result = max(1, floor(1e8 / (float × 1e8 + 1) × 0.99 × 100) / 100). Small floats give huge results, large floats give results near 1×.
P(result ≥ target) ≈ 0.99 / target, so a payout of target× returns 99% on average. The 0.99 in the formula is the 1% edge.
Play money only. Nothing to buy, nothing to win, nothing leaves your browser. Reset the balance whenever you like.