Lua Course

Learn Lua, the lightweight scripting language. Perfect for game development, embedded systems, and extending applications.

Learn Lua — a lightweight scripting language used in games and embedded systems — with concise, beginner-friendly lessons.

New to Lua? No prior experience needed.

Start with Lesson 1 — Introduction to Lua. Whether you want to mod games or build scripts, this course has you covered.

Continue where you left off

Lessons in this course

• Introduction to Lua — What Lua is, where it's used, and how to run your first Lua script
• Variables and Data Types — nil, booleans, numbers, strings — and how Lua handles types dynamically
• Functions and Tables — Define functions and use Lua's versatile table structure as arrays and objects
• Control Flow and Loops — if/elseif/else, while loops, repeat-until, and numeric for loops
• Metatables and Metamethods — Customise how tables behave with __index, __newindex, and operator overloading
• Lua for Game Development — Apply Lua in game engines like LÖVE2D and Roblox with practical examples
• Strings & Pattern Matching — The string library and Lua's own pattern system — find, match, gmatch, gsub
• OOP with Metatables — Build classes, methods and inheritance using __index and setmetatable
• Coroutines — Cooperative multitasking with create, resume, yield and wrap
• Modules & require — Split code into files that return tables and load them with require
• Error Handling: pcall & error — Lua's protected-call model — pcall, xpcall, error and assert
• Standard Library: io, os & math — Read and write files, work with time and the system, and do math

Frequently asked questions

What is Lua used for?

Lua is a lightweight scripting language embedded in games and applications. It powers scripting in Roblox, World of Warcraft and many game engines, and is used in embedded systems and tools like Redis and Neovim.

Is Lua easy to learn?

Lua is small and simple by design, making it one of the quickest languages to pick up. Its clean syntax and minimal feature set are ideal for beginners and for adding scripting to larger projects.

What is Lua actually used for?

Lua is an embedded scripting language: it is designed to sit inside a bigger program written in C or C++. That is why it turns up in Roblox and World of Warcraft, in Neovim configuration, in Redis scripts, in nginx via OpenResty, and in embedded devices. You rarely build a whole application in Lua — you script one.

Is Lua easier than Python?

The language itself is smaller — Lua has a handful of types and one data structure, the table, where Python has many. That makes the syntax quicker to learn. The catch is that the standard library is tiny by comparison, so anything Python does with an import you may have to write yourself or pull from a C library.

Why do Lua arrays start at 1?

Because Lua was designed as a configuration and description language, where counting from one reads more naturally to non-programmers. It is the single most common source of off-by-one bugs for people arriving from C, Python or JavaScript, so the course flags it early and often.

What is a table in Lua?

The table is Lua's only compound data structure, and it does the job of arrays, dictionaries, objects, modules and namespaces all at once. Learning to think in tables — including metatables, which is how Lua does inheritance — is most of learning Lua.

Do I need to know C to learn Lua?

No, not to write Lua. You only need C when you want to embed the Lua interpreter in your own program or expose C functions to Lua scripts, which is an advanced topic and not where anyone starts.