How is the bustabit script algorithm made

Bustabit is a betting game where you try to guess the largest possible magic number in each contest. Sounds kinda dull, but there's a catch: this number is a Bitcoin multiplier! So, there's actual money involved in bustabit.

Lots of it. How does Bustabit work? If you guess a multiplier before the game crashes, you earn that much more Bitcoin than you bet. Which means that, if you play Bustabit right, in theory it's possible to multiply your Bitcoin stash several times over in very little time. If the game crashes before your guessed number is reached, you lose your entire bet.