A simple mod that stop mobs from spawning. On first load of the mod, a file "tomsmonstopper.txt" will be generated in the config folder. To stop mobs from spawning, simply add a mob to this list as "modID:mob_name" (without quotation marks)

For example, if you don't want sheep to spawn you should add the following to the textfile: minecraft:sheep

Each mob needs its own line!