One night a year, all crime is legal. If that premise hooked you, here's the family tree it comes from: a hundred years of stories where the violence is scheduled, rule-bound, or performed for an audience.
1. The Most Dangerous Game · Richard Connell (1924)
A big-game hunter shipwrecks on an island where a bored aristocrat hunts the only quarry that can reason: people. The whole sanctioned-violence genre starts on this island, in about twenty pages.
2. Lord of the Flies · William Golding (1954)
Schoolboys stranded without adults build their own rules, then discover the rules only exist while someone enforces them. The Purge asks what happens when law pauses; Golding asks whether it was ever there.
3. The 10th Victim · Robert Sheckley (1965)
In a future that solved war, citizens volunteer for the Big Hunt: ten rounds alternating as hunter and victim, televised, fully legal. The closest any novel comes to the Purge premise decades before the film.
4. The Long Walk · Richard Bachman (1979)
One hundred teenage boys walk until only one is left; drop below four miles an hour and you get a warning, three warnings and you're done. Stephen King's first novel, written as Bachman. No gimmicks, just a pace you can't stop.
5. The Running Man · Stephen King (1982)
A desperate man signs up for the deadliest show on state television: hunted across the country, prize money for every hour he survives. Written in a feverish week, and it reads like one.
6. Battle Royale · Koushun Takami (1999)
A class of junior high students is transported to an island and ordered to kill each other in a government "Program." The premise has been copied endlessly; the original novel is colder and more procedural than any of the copies.
7. My Brother on the Moon · Maximilian Coolheit Vorfahrenheit (2026)
Disclosure: I wrote this one. The Purge got the window wrong. In Ventenstein it isn't one night a year, it's one hour a day, and the violence isn't permitted, it's viral. A gravedigger buries what the violence leaves, and a stranger keeps visiting him anyway. ~68 pages, free on Kindle Unlimited. Amazon. Last because the six above defined the rules it breaks.
Where to start
The ancestor: The Most Dangerous Game. The legal-hunt blueprint: The 10th Victim. The one you'll finish tonight: The Long Walk. Then the indie that made the window daily.