This is a great mod that adds some new stuff into minecraft! You can turn the Nexus block on then waves of many different types of mobs added into the game. Now I'm not going to tell you all the awesome stuff that comes with the mod, but I'll make sure you can a watch a video and download this beast mod! Thanks for reading peoples and goodbye and this mod was made by, "Lieu"

Links!

Download the mod: http://www.skydaz.com/invasion-mod-installer-for-minecraft-1-4-2/

Visit the original mod thread here: http://www.minecraftforum.net/topic/780480-142-invasion-mod-v0111-so-you-think-your-base-is-tough-do-you/

Youtube videos: http://www.youtube.com/results?search_query=Invasion+Mod+-+Minecraft+1.4.2&oq=Invasion+Mod+-+Minecraft+1.4.2&gs_l=youtube.3...9474.87156.0.87434.32.21.1.0.0.0.1183.1183.7-1.1.0...0.0...1ac.1.JIZqRjObcdM