Multicraft is a Minecraft launcher what makes it easy to use different launchers and keep track of all your game files, game data will be stored in "program files" rather than "app data". you must make sure you keep the box ticked that launches the program after installation is complete. otherwise the first run window won't open and you won't have any launches to launch. more features and changes to come in the next release. 2.2 Changes * Added - Message rmellis; * Added - Friends page (advertising); * Changed location of Multicraft; * Updated batch files; * Fixed bug with program closing when game is clicked; is it legal? Yes. Multicraft does not come with any of the minecraft launchers at all. all the launchers are downloaded from the first run window where you click download, this will show you the URL where you can visit the creators of the launchers sites/page including minecraft.net for vanilla.