You want to create your own Minecraft launcher for your server or modpack, without knowing how to program. This guide explains everything clearly, step by step, without code and without technical knowledge.

By the end of this guide, you will know how to:

install the launcher
configure it correctly
understand how mods work
understand why plugins are not in the launcher
update your game easily

What this Minecraft launcher is for

This launcher lets you automatically download a Minecraft client ready to play, update it if needed, then launch the official Minecraft launcher with an automatically created profile.

It never asks for players' login details and fully respects Minecraft's official rules. It also remains functional even if Microsoft changes its authentication system.

What you need before starting

Official Minecraft installed on your PC
A PC running Windows
WinRAR or 7-Zip
A website or hosting to put files online

Step 1: Download the launcher

Download the latest version of the launcher as a .jar file.

https://github.com/KinderrKill/Minecraft-Installer

Keep this file on your computer and do not launch it yet.

Step 2: Open the launcher to configure it

Right-click the .jar file, then open it with WinRAR or 7-Zip. In the file list, look for:

Launcher.properties

Open this file with Notepad. It is the only file you need to edit to configure your launcher.

Step 3: Prepare the game files

The launcher will download the game from the Internet. You therefore need to prepare the files in advance on your hosting.

In an online folder, put:

the .jar file of your Minecraft client
the client's .json file
a .txt file containing the version number
optionally, a resource pack in .zip

Example:

Yolycube.jar Yolycube.json Yolycube_Version.txt RessourcePack_YolyCube.zip

In the Yolycube_Version.txt file, simply write:

Important rules:

no spaces in the names
no accents
the names must be strictly identical everywhere

Step 4: Configure the Launcher.properties file

Link to the game files

DOWNLOAD_URL=https://exemple/launcher/files/

This link must point directly to the folder containing the files. Clicking the .jar file from a browser must start the download.

Client name

CLIENT_FILE_NAME=Yolycube CLIENT_VERSION_NAME=Yolycube_Version

These names must exactly match the .jar, .json and .txt files.

Display name in the launcher

CLIENT_TITLE=PVP Faction Yolycube

Resource pack (optional)

RESOURCE_PACK_NAME=RessourcePack_YolyCube.zip

If you are not using a resource pack, simply put:

RESOURCE_PACK_NAME=null

Step 5: Test your launcher

Save the Launcher.properties file, close WinRAR or 7-Zip, then double-click the launcher .jar file.

If everything is correct:

the launcher opens
the game downloads automatically
Minecraft launches

Mods, how it works

The launcher does not download the mods one by one. The mods are already included in the Minecraft client you prepared.

mods/ --- jei.jar --- journeymap.jar --- examplemod.jar

When the launcher downloads the client, all the mods are already there. The player does not need to install anything.

Plugins, why they are not in the launcher

Plugins are installed only on the Minecraft server. They are never on the player's computer.

The launcher therefore does not download the plugins. That is normal and intentional.

Updating the game and mods

When you modify the client, the mods or the resource pack:

replace the files on your hosting
open the Yolycube_Version.txt file
increase the version number

1 > 2

At the next launch, the launcher will automatically update the game. The number must always be an integer.

Summary

you can create a Minecraft launcher without coding
you modify a single configuration file
the launcher downloads a game ready to play
the mods are included in the client
the plugins are managed by the server
updates are done by changing a number

How to create your Minecraft launcher without coding