To install the Minecraft game, go to minecraft.net/download and download the game client. The game client can be downloaded even if the game is not purchased, but only the demo version of the game can be played. After downloading the client of the Minecraft game, double-click the icon to run it.It should be noted that the Minecraft purchase is tied to the account (email address), not any device. If purchased, Minecraft: Java Edition can be downloaded and installed on any system.