Enter only if you know what you are doing!
All information concerning the development and beta testing of
Pingus is at a separate section on this webpage, so that players
don't accidentally see stuff that wasn't yet meant for release or
grab a development snapshot, instead of a stable binary by
accident. So if you are a player don't enter this section, but
instead stay on the light site of the Pingus webpage and simply
wait for the next stable release which will contain everything in
a nice packaged and useable form, going to the development section
will just spoil you a lot.
If you are or want to become a developer you are of course welcome
to the dark site of Pingus, there you will find source code
documentation, a todo with stuff that needs to be done and
unfinished game elements that might need you to finish them.