Site: https://mindustrygame.github.io
Git: https://github.com/Anuken/Mindustry
Libregamewiki: https://libregamewiki.org/Mindustry
See the installation way for your platform on the site
In main menu of game: Play -> Join Game. Choose the name, press add server: enter adress 127.0.0.1, port can be not indicated (default 6567). Click in the field of the added server.
1. Install "Java Runtime Environments" (JRE, abridged version of JDK) or "The IcedTea Open Java SE" (open implementation of Java);
2. Download the latest version of Mindustry.jar file from release on GutHub;
3. Give users right to run the file as executable: $ chmod +x path/to/file/Mindustry.jar
;
4. Run file from your file manager or terminal: $ java -jar part/to/file/Mindustry.jar
;