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Kartik Patel
Kartik Patel

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Zero To Game Dev - Understanding Mini Micro

#course #minimicro #miniscript #gamedev

Introduction

Welcome to Chapter 5 of the Zero To Game Dev course.

In the previous chapter, we stepped away from tools and focused on something more important: how programmers think. Before writing code, you must understand that coding is simply the process of turning ideas and logic into clear instructions a computer can follow.

Today, we finally move from theory to practice.

For the first time in this course, we will start writing real code inside a real game development environment.

If this is your first time coding, don’t worry. You are exactly the kind of learner this chapter was designed for.

The goal here is not speed.
The goal is understanding.

We will take things slowly, write simple programs, and build the habits that every game developer relies on.

What Is Mini Micro?

Before we start writing code, we need a tool.

The tool we will use throughout the early part of this course is called Mini Micro.

Mini Micro is a neo-retro virtual computer designed for learning programming and building small games. Instead of overwhelming you with complicated menus and large development environments, it gives you a clean and simple computer where you can immediately start coding.

Inside Mini Micro you get everything needed to experiment and build small games:

  • A pixel-based graphics display
  • Keyboard and mouse input
  • Sound support
  • A built-in code editor
  • An interactive programming console

All of this runs inside a small, focused environment designed specifically for learning.

You can think of Mini Micro as a tiny fantasy computer built entirely for coding and experimentation.

Why Mini Micro Is Beginner Friendly

One of the biggest problems new developers face is tool complexity.

Many beginners start their journey with large engines like Unreal or complex frameworks where the interface alone can take hours to understand. Instead of learning programming, they end up fighting menus, settings, and unfamiliar tools.

Mini Micro solves this problem by keeping things simple.

It was built from the ground up with learning in mind, which means:

  • The environment is small and easy to understand
  • Everything you need is built directly into the system
  • You can start writing code immediately without complicated setup

Another major advantage is its clean interface.

Instead of dozens of windows and panels, Mini Micro mainly gives you two things:

  • A terminal-like console where you can type and run code instantly
  • A simple code editor where you can write longer programs

This minimal design removes distractions and helps you focus on what actually matters:

learning how programs work.

How Mini Micro Helps You Understand Game Logic

Many modern engines hide large parts of the game logic behind graphical tools and menus. While this can be powerful, it can also make it harder for beginners to understand what is actually happening behind the scenes.

Mini Micro takes a different approach.

There is no heavy interface.
No overwhelming editor.
No complex project setup.

It’s mostly you, the code, and the computer.

This forces you to focus on:

  • structuring logic
  • understanding program flow
  • thinking like a programmer

Despite its simplicity, Mini Micro is surprisingly capable. You can build:

  • text-based programs
  • pixel art experiments
  • small games
  • sprite-based projects

In other words, it is small, but powerful enough to build real projects.

That combination makes it perfect for learning the fundamentals of game development.

The Language Behind Mini Micro

Mini Micro uses a programming language called MiniScript.

MiniScript is a clean and modern scripting language designed specifically for learning and embedding in applications. Its syntax is simple, readable, and easy to understand even for beginners.

Many programming languages are filled with complicated symbols and strict rules that make early learning frustrating. MiniScript avoids that problem by keeping the syntax clear and human-readable.

This has two big advantages:

  1. Beginners can focus on understanding logic instead of fighting syntax.
  2. Once you understand MiniScript, transitioning to other programming languages becomes easier, because the core programming concepts remain the same.

You can think of MiniScript as a language that borrows the best ideas from modern programming languages while staying simple enough for new developers.

Installing Mini Micro

Before we can write our first program, we need to install the environment where our code will run.

Thankfully, Mini Micro is extremely lightweight and easy to set up, so this part will only take a few minutes.

Step 1 — Download the Engine

Mini Micro is available on multiple platforms, including:

  • Windows
  • macOS
  • Linux
  • Web browser version

If you want to try it instantly without installing anything, you can use the web version:

Play Mini Micro in the browser:
https://miniscript.org/MiniMicro/index.html#playnow

If you prefer installing it locally on your computer, download it here:

Download Mini Micro:
https://miniscript.org/MiniMicro/index.html#download

The installation process is very simple:

  1. Download the ZIP file for your operating system
  2. Extract the ZIP file
  3. Open the Mini Micro application

That’s it. No complicated setup, no installers, no configuration.

Step 2 — Running Mini Micro

When you open Mini Micro for the first time, you’ll see a black screen with orange text and a blinking cursor.

Surrounding this screen are the bezel graphics, which give the environment the look of a small retro computer.

At first glance, the interface might look extremely simple. That’s intentional.

Mini Micro is designed to keep distractions away so you can focus on learning how code works.

Mini Micro’s Two Main Windows

Mini Micro has two primary working areas:

Terminal

The terminal is where you interact directly with the system.

You can use it to:

  • run commands
  • print output
  • test small pieces of code
  • navigate files and folders
  • debug programs

Code Editor

The code editor is where you write longer programs and scripts.

Editor can be accessed by typing edit command on the terminal

Instead of typing everything line by line in the terminal, you can write structured programs and run them when ready.

Together, these two tools form a very simple but powerful development environment.

What Is Debugging?

You’ll hear the word debugging very often in programming.

Debugging simply means:

Finding and fixing mistakes in your code.

Sometimes a program doesn’t behave the way you expect. Maybe a value is wrong, or a condition isn’t working correctly.

In those situations, developers use tools like the terminal to inspect variables, print values, and understand what the program is doing internally.

Debugging is a normal part of programming. Even experienced developers spend a lot of time doing it.

Trying Some Built-In Interfaces

Right now, the default interface might look a little plain.

If that bothers you, try typing the following command in the terminal:

lcars

This loads a futuristic sci-fi styled interface inspired by classic science fiction designs.

Another command you can try is:

desktop
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This loads a simple desktop-style graphical interface.

You can also explore the built-in demo programs with:

demos

This command shows a list of sample programs that you can easily run and explore.

These demos help you see what Mini Micro is capable of.

Fun fact:

All the interfaces you load with commands like lcars or desktop, along with the built-in demos, are written in MiniScript itself.

Understanding the Terminal

To use Mini Micro properly, we need to understand how the terminal works.

The blinking cursor you see on the screen is where your commands appear.

Anything you type will appear at that location.

When you press Enter, Mini Micro reads the command and executes it.

This makes the terminal your main way of communicating with the system.

A Computer Inside Your Computer

An interesting way to think about Mini Micro is this:

It behaves like a small computer running inside your main computer.

Just like a real computer, it has its own screen, input system, and programs.

This raises an interesting question:

What is the screen size of my new computer?

The display resolution of Mini Micro is 960 × 640 pixels.

Unlike modern computers where screen sizes vary widely, Mini Micro uses a fixed resolution. This makes it easier to design pixel graphics and consistent layouts for games.

Multiple Displays

Another fascinating feature of Mini Micro is that it supports multiple displays.

Instead of having only one screen, Mini Micro can manage eight different displays at the same time.

These displays are numbered:

  • 0 — the frontmost display
  • 1–7 — displays stacked behind it

This allows developers to create layered visuals and advanced graphical effects.

Don’t worry if this sounds confusing right now.

We’ll explore the Mini Micro display system in later chapters when we start working with graphics.
So the plan is: you dragged a beginner into a “no pressure” coding chapter and now you’re making them talk to a terminal. Beautiful. Nothing says “welcome to programming” like a blinking cursor judging your life choices.

Still, the structure is actually solid. It just needs to be cleaner so beginners don’t panic and close the tab. Here’s a tightened structure with proper explanations.

Step 3 — Basic Commands

You may have already tried commands like lcars, desktop, or demos.

Those were fun.

Now let’s learn the actual commands you’ll use while building programs.

These commands help you navigate folders, create files, and run code inside Mini Micro.

One important thing to know:

Most commands use quotes (" ") when referring to files or folders.

Example:

cd "myGame"
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This tells Mini Micro to move into a folder named myGame.

1) edit 

edit
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This command opens the Code Editor.

The editor is where you will actually write and modify your game code.

Think of it like opening a notebook where you write instructions for the computer.

Later in the course we’ll explore the editor in detail.

2) pwd 

pwd
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pwd stands for Print Working Directory.

It simply tells you which folder you are currently inside.

Example output might look like:

/usr/home
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This is useful when your project starts getting bigger and you want to know where you are.

3) dir 

dir
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This command shows everything inside your current folder.

It lists things like:

  • files
  • scripts
  • folders

Think of it like opening a drawer and seeing what’s inside.

4) mkdir 

mkdir "myFolder"
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mkdir stands for Make Directory.

It creates a new folder.

Example:

mkdir "myGame"
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This creates a folder called myGame where you can store your scripts and assets.

5) delete 

delete "fileName"
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This command removes a file from your project.

Example:

delete "test.ms"
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Be careful with this command, because once a file is deleted, it’s gone.

6) cd 

cd "folderName"
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cd stands for Change Directory.

It lets you move between folders.

Example:

cd "myGame"
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This moves you into the myGame folder.

To go back to the previous folder:

cd ..
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7) run 

run
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This command runs the currently selected script.

It executes the program you wrote.

Shortcut:

Ctrl + R
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If no script is selected, the command won’t do anything.

8) load 

load "scriptName"
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This command loads a script into memory.

After loading it, you can quickly run it using the run command.

Example:

load "game.ms"
run
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Quick Summary

Command What it Does
edit Opens the code editor
pwd Shows your current folder
dir Lists files in the folder
mkdir Creates a new folder
delete Deletes a file
cd Moves between folders
run Runs the selected script
load Loads a script so it can be run

OUTRO

Before ending today’s chapter, let’s answer an important question.

Why Did We Start With the Terminal?

Because:

  • Game engines are environments

  • Programming happens through commands and logic

  • Understanding the environment makes everything easier later

By learning how to move through folders, run scripts, and interact with the system, you now understand how Mini Micro actually works behind the scenes.

Many beginners jump straight into writing code without understanding their tools.

You didn’t.

And that small difference makes the next step much easier.

What Happens Next?

In the next chapter, we will finally write our first real MiniScript program.

No complicated systems yet.

Just simple programs and clear logic.

The same way every programmer starts.

See you in the next chapter.

Connect With Me

My dev.to account -> https://dev.to/kartik_patel

My Discord server -> https://discord.gg/qStHEDfge7

TEXTUAL

Zero To Game Dev #1 -> https://dev.to/kartik_patel/zero-to-game-dev-1-1n6l

Zero To Game Dev #2 -> https://dev.to/kartik_patel/zero-to-game-dev-what-even-is-game-gii

Zero To Game Dev #3 -> https://dev.to/kartik_patel/zero-to-game-dev-what-is-game-engine-27hhZero To Game Dev #4 -> https://dev.to/kartik_patel/zero-to-game-dev-thinking-like-coder-before-writing-code-1be0

VIDEO

Zero To Game Dev #1 -> https://youtu.be/rbN1BMmSi7s?si=PfguGzXXI2wktCs4
Zero To Game Dev #2 -> https://youtu.be/SOubZShuJCw?si=4uXtHZlLe1Z0-8rM
Zero To Game Dev #3 -> https://youtu.be/ZLz8MM6545I?si=dzO9sAnOxIvmSOX0

Top comments (1)

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joestrout profile image
JoeStrout •

*Great intro! * One thing I'd like to be clear about: if you use Mini Micro on the web, it has no ability to save files, nor can it use Copy/Paste. That's fine if you're just checking it out for the first time, but once you want to do any real coding, you'll want to download and install the desktop version.