[1.2.5] This is a mod that makes zombies the only hostile mob that spawns in the overworld and makes them a lot easier to kill. It takes 6 hits with the fist, 2 hits for wood/gold/stone, and 1 hit for iron/diamond.
Installation:
For singleplayer, open your "minecraft.jar" and delete the META-INF folder. Copy "abn.class" and "ajg.class" from the "minecraft" folder into the jar file.
For multiplayer, open "minecraft_server.jar". Copy "lt.class" and "wl.class" from the "minecraft_server" folder into the jar file.
You messed up in installation you DO NOT delete meta inf when its multilayer if you do that your server will crash do to meta-inf being a major thing in smp So just remove the delete meta inf step
Installation:
For multiplayer, open "minecraft_server.jar". Copy "lt.class" and "wl.class" from the "minecraft_server" folder into the jar file.
Downloads:
I only did this because it was requested for an adventure map.