Ok, so this tool is not mine, but I have GOT to share it here as it cannot go unnoticed. This is Minecraft Downgrader.It lets you downgrade to any version any time, and it even lets you downgrade to v.0.30 SURVIVAL TEST. Yeah, you know where monsters spawn in the day, no crafting and breaking stone with your bear hands? Yeah, that version. I have made a toutorial here, (sorry theres no commentary :wink.gif: ) along with a download link.
Download:
http://digiex.net/minecraft/mcvtool/
Video:
thanks to LucasAntunes998 for making this banner!