As you may know, Minecraft is a sandbox indie game, enabling the users to build beautiful buildings, but also some structures to protect against nocturnal monsters.
The latest version available is Minecraft 2.1.1431, which comes with a bunch of changes.
The official website provides a deb package containing all the dependcies of the Minecraft (java-based version), so installing the game on Ubuntu, Linux Mint, Debian and other deb-based systems should not cause too much trouble.
All you need to do is install gdebi (if you don’t have it already – a software that helps you install dependencies), download the minecraft deb package and install it:
$ sudo apt-get install gdebi
$ wget https://launcher.mojang.com/download/Minecraft.deb
$ sudo gdebi Minecraft.deb
Optional, to remove minecraft, do:
$ sudo apt-get remove minecraft