Does that include things like the MVC? Minecraft Version Changer?
Is there any way to get the alpha or pre-beta jars?
I am not allowed to post them here as it would violate rules. I can only give links to assets hosted by Mojang and this is all they have on their websites. If you legitimately bought Minecraft, I see no problem in searching the web for uploads of them. If you didn't, buy the game. It's only $26.95/€19.95/£17.95.
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Always think before you post! Everyone (including you! - and I) make mistakes at times.
Download ANY Minecraft release here (.jar files)
How to use custom jars in the new launcher here
my jar downloads turn to zip I need help
I downloading for aether 2
I believe you are opening the jar, and a program such as WinRAR is opening it as an archive. Go to .minecraft\bin\ and replace minecraft.jar. If you do not know how to get here, open the launcher, click Options, and click the directory; this will take you to .minecraft.
why would y-u want old Minecraft jars because you wouldn't be able to play on a lot of server
that comment hurt.
You may want to play old minecraft versions because of nostalgia- minecraft has been nearly totally redone, and plenty of people have a lot of memories they want to relive. If you are a servergoer- than go right ahead. but many aren't