How Roblox Scripts Work

Lua: the language of scripts

Roblox games are built with Lua, a lightweight scripting language. Most scripts you find online are also written in Lua, which lets them interact directly with a game's objects, events, and values.

The role of the executor

An executor is the program that runs your script. It 'injects' the Lua code into a game session that's already running, giving the script permission to read and change parts of the game on your client.

Because the executor is doing the heavy lifting, script compatibility often depends on which executor you use and how up to date it is.

Why scripts break after updates

Games change constantly. When a developer renames an object or restructures how something works, a script that relied on the old structure can stop functioning. That's why working scripts need regular updates to stay compatible.