Talk:NPC/@comment-46.7.97.28-20120119214657/@comment-76.174.80.210-20120120213830

"The floor of an NPC room must have at least one solid block (i.e. not a wood platform), known as an NPC block, for the NPC to stand on at night. There must be at least 3 blocks of empty space above this NPC block (the ceiling must be 4+ blocks away). There must also be 2 blocks of horizontal distance between the NPC block and the side walls of the house (the left/right walls must both be 3+ blocks away) "