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On Ubuntu 14.04 the Ubuntu Software Store won't show Minecraft, so we can install it via the terminal. You can quickly open the Terminal by pressing Ctrl+Alt+T or by searching for "terminal" in the dash     {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/27\/Launch-terminal-in-14-04.png\/460px-Launch-terminal-in-14-04.png","bigUrl":"\/images\/thumb\/2\/27\/Launch-terminal-in-14-04.png\/728px-Launch-terminal-in-14-04.png","smallWidth":460,"smallHeight":351,"bigWidth":"728","bigHeight":"556","licensing":"<div class=\"mw-parser-output\"><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"} The first command refreshes the list of packages available. Type sudo apt-get update. Enter your password if prompted. In order to install snaps, you need to install the "Snap Daemon" which manages the installation & upgrades of snaps. In Ubuntu 14.04 it needs installing manually. In later releases of Ubuntu (from 16.04 onwards) it's already installed. Type sudo apt-get install snapd. Enter your password if prompted. Press "Y" when asked if you want to continue. Finally, in the terminal, type sudo snap install minecraft which will install the Minecraft snap. Once finished, close the terminal window. Click the Ubuntu button (or press the 'Super/Windows' key on the keyboard) and search for Minecraft. Click the familiar Minecraft icon when found.
Open Terminal: Update the package list. Install snapd. Install Minecraft. Launch Minecraft.