Slime Dungeons Mod adds a new dungeon to the game. Why would you want it? The walls drop or can be smelted into slimeballs, the mob in there drops slimeballs and the chests can contain slimeballs.
How to install:
Slime Dungeons Mod Download Links:
Other Versions:
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For Minecraft 1.5.1
For Minecraft 1.4.7
For Minecraft 1.5.2
For Minecraft 1.6.2
For Minecraft 1.6.4
For Minecraft 1.7.2
For Minecraft 1.7.10
For Minecraft 1.8