Roblox garbage collection script

Roblox garbage collection script discussions usually pop up the moment a developer notices their game's memory usage climbing steadily into the red zone. If you've ever spent weeks building a massive open-world map or a complex round-based system only to find that players are crashing after thirty minutes, you've probably gone down the rabbit hole of trying to find a "magic" script that cleans everything up. The truth is, garbage collection (GC) in Luau—the version of Lua that Roblox uses—is a bit of a double-edged sword. It's mostly automatic, but it's only as smart as the code you write. ...

February 12, 2026 · 7 min · Callahan Rueth