Limbo
A game where you choose a target multiplier and win if the randomly generated result is equal to or above it.
In limbo you set a target multiplier, such as 2.00x, and place a bet. The game generates a result multiplier. If the result meets or exceeds your target, you win your bet times the target.
How results are generated
A common provably fair method takes one float between 0 and 1 and converts it so that the chance of reaching a multiplier m is about (1 - house edge) / m. With a 1% house edge, the chance of reaching 2x is about 49.5%, and of reaching 100x about 0.99%. Exact formulas, rounding and minimum results differ between casinos.
Why it matters
Limbo lets you choose your own volatility. The house edge stays the same whatever target you pick, but higher targets lose more often and pay more when they hit.
Worked example
You bet $5 at a 3.00x target. With a 1% house edge, your chance of winning is about 33%. If the result is 4.21x, you win $15. If it is 2.87x, you lose $5.