Talk:Eye of Cthulhu/@comment-124.180.55.207-20110903002844/@comment-4246239-20110903004750

The Eye of Cthulhu has a 33% chance of spawning every night so long as the following criteria above are met, so I guess that your brother was either really lucky or really unlucky to have one pay a visit to him every night. However, since you 2 defeated an Eye of Cthulhu in that world, then it shouldn't pester your brother anymore (at least in the world where you guys defeated it).