Why Every Dev Needs to Understand the Roblox Local Script

Roblox local script usage is what separates a clunky, lagging game from one that feels snappy and professional. If you've ever wondered why your GUI won't pop up or why your character's custom movement feels delayed, you're probably looking at a client-side issue. In the world of Luau (Roblox's version of Lua), understanding the "where" and "how" of your code execution is half the battle. If the server is the brain of your game, the local script is the nervous system—it's how the player actually interacts with the world around them. ...

January 13, 2026 · 7 min · Shiela Diamant