This is Roblox Lua Script. This is a programming language used to create games, avatars, and platforms on Roblox. It is a high-level scripting language that can be used to provide functionality to Roblox projects, such as the ability to move characters, jump, make sounds, and perform other actions. Roblox Lua is an easy-to-learn language that can be used to create virtually anything, and it can be used in conjunction with other programming languages such as JavaScript, C#, and C++ to make games.