Download: https://ayra.ch/apps/bin/MineLaunch.zip
Extracted it is only a few Kilobytes.
As you see, you need to download Minecraft and have to Pay for the Game,Readme wrote: Welcome to my Portable Release of Minecraft
Please note: This is only a Launcher, Download the Minecraft Executable,
place it in this Folder and make sure it is named "minecraft.exe"
Download the Client from http://minecraft.net
File List:
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launcher.exe --- launches Minecraft in a portable Version
makePortable.exe --- Copies an existing Local Profile to the Portable Storage
ToLocal.exe --- Copies a Portable profile back to the Lacal Storage
CHOICE.COM --- Yes-no-Cancel Thing, DO NOT DELETE
Readme.txt --- problem?
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launcher.exe is really only a launcher,
you can have a portable and a normal version running at the same Time without
Errors. You can also run any Number of portable Clients at the same Time,
just create multiple copies of this Directory
the "makePortable" is not required to launch Minecraft portable, it just allows
you to copy your local profile to the Portable one, allowing you to carry all
your already built Worlds with you.
the "ToLocal" it the opposite from the makePortable, it allows you to copy a
portable Profile back to the local Storage.
but the launcher makes it fully portable.