1) find minecraft.jar in your minecraft folder. (should be at appdata/roaming/.minecraft/bin/)
2) open minecraft.jar with programs like winrar or 7-zip.
3) delete the META_INF folder, if not it wont work.
4) when opened go into the lang folder and replace the en_US.lang file.
5) play minecraft and have fun.
V1.3: Fixed many wrong words.
Hopefully fixed the "verden" worlds got invicible!
V1.2: Fixed some wrong spelled words.
V1.1: Fixed the ON OFF stuff.