Minetest is an open source voxel game engine.
To connect to the intranifty.net minetest server you will need minetest 5.6.1. You can download it from one of the links below:
Running MineClone 2.
To connect to the server, launch the minetest client. Go to the second tab Join game.
If this is the first time you connect, you will have to register an account. Type your password again and click the Register and Join button. If your passwords don't match, nothing will happen.
Enjoy the game!