Thrillers and horror use coin flips, roulette cylinders, contracts, and rigged...

https://chloessuperthoughts.quantlynix.com/posts/what-is-the-difference-between-a-curse-and-a-coin-flip-in-horror

Thrillers and horror use coin flips, roulette cylinders, contracts, and rigged games to ratchet up tension with brutal fairness. Take No Country for Old Men: a coin toss seals life or death, forcing characters and viewers into cold uncertainty