How to Get Minecraft Infdev to Work on the New Launcher

Minecraft fans who want to experience the game's early days may be disappointed to find that the Indev and Infdev versions are not available in the official Minecraft Launcher. However, with a few simple steps, you can still get these older versions of the game working.

The main issue preventing the world from being generated in Indev and Infdev is a check implemented by Notch to prevent authentication against a specific server if the game couldn't verify the user's identity. To fix this problem, you need to properly set the proxy port if you changed it in the Python script.

To get started, select the version of Minecraft you want to play from the list and click on the 'More options' button. Add the following JVM arguments at the end of the 'JVM Arguments' section:

old_alpha

This will allow you to generate worlds in Indev and Infdev versions of the game.

Next, create a new installation in the Minecraft Launcher by selecting the version you just downloaded. Make sure that Historical versions are enabled. You can do this by checking the box next to 'Historical versions' when creating your new installation.

If you want to play Infdev 20100227, for example, you'll need to download the required files and place them under minecraft/versions/. You'll also need a json file from a known source such as the Minecraft Wiki, which you can place in the same directory. Be aware that Indev and Infdev versions are not available in the official Minecraft Launcher, so you will need to download a separate version of the game.

Finally, you can customize your proxy by changing the PROXY_PORT variable in the Python script located in /Lib/site-packages/indevproxy. At this point, the proxy is running on port 8084 of your machine.

By following these simple steps, you should be able to get Minecraft Infdev working on the new launcher and experience the early days of this popular game.

How to get minecraft infdev to work on the new launcher