You can defeat the Dream Devourer from Chrono Trigger using an int overflow

A vulnerability in the Dream Devourer boss fight in the classic RPG Chrono Trigger can be exploited using an integer overflow, allowing players to defeat the boss without taking damage. The bug occurs when the player's HP is at 0 and they attack the Dream Devourer, causing an overflow that allows the boss to be defeated instantly. This glitch has been documented on the Chrono Trigger wiki and has been discussed on Hacker News.