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

Chrono Trigger (Nintendo Switch) — If reading about int-overflow exploits against the Dream Devourer has you itching to revisit Chrono Trigger, grabbing the game lets you try the trick yourself. It's a classic RPG that holds up beautifully, and having it on Switch makes it easy to experiment with battle mechanics like this one.