This mod makes vanilla mobs stick together in herds. These herds then slowly repopulate themselves. Also, zombies. Thank you to all the people trying my mod. That means you!
Little More Mod by MiniTMO
This mod adds two new ores and two new blocks (ruby and sapphire). It also adds new tools and new armors (lapis, ruby, sapphire, quartz, obsidian and emerald). You're also able to make battle axes.