N has inspired a thriving and intensely creative community which are also a lot of fun. You can find the forums here.

NUMA, the N User Map Archive, is another great source for finding out about and taking part in the N community. NUMA is an online database of levels for version 1.4 created by users using Ned, N's built-in level editor. There are thousands of authors and thousands of maps in this user-friendly, searchable, completely awesome database.

N version 2.0 (playable online here includes a built-in sister to NUMA, allowing you to both create and play maps from right within N. Convenient! Just make an account and you're ready to go.

Need help creating a great N level? Check out this informative Instructable on the subject.