On June 6th we started a level design contest. It runs until July 7th and everybody is welcome to submit as many levels as they like. Text and video tutorials are available.
We received ten levels so far via email, webchat and forum:
To test them, you have to unzip the archive [mirror 1 | mirror 2] to the following directory:
WINDOWS: %APPDATA%\nikki-free-levels\userLevels\
LINUX/MAC OS X: ~/.nikki-free-levels/userLevels/
Just copy the path into Explorer's (CTRL + L) or Filer's (CMD + SHIFT + G) location bar to enter that directory.
Read the full announcement here.
Looking forward to more submissions!
My level is still under construction! I will check out these maps and then decide whether it's worth to send in my own map or not.