Talk:Dryad/@comment-180.216.7.91-20111213095704/@comment-4674838-20111213100256

NPCs may not spawn if there's a goblin army somewhere in your world. Walk around a bit and make sure there isn't one. Also, you need suitable housing. Tips if your housing is not suitable:

1) Corruption being too close to your house (ex. corrupt grass on the surface or ebonstone underneath) can cause housing to not be suitable. Make sure that no corruption is near your house.

2) There is a bug in 1.1 that makes doors which open into an NPC house to potentially cause housing to not be suitable. Make sure that your door opens to the outside of the room. If you have 2 NPC houses next to each other, you may want to add a hallway inbetween to ensure that this bug does not occur and also to ensure that the 2 NPC houses are not "sharing" the same door.

3) Read House and double-check that your house meets all the usual requirements.