Level 1

http://notpron.org/notpron/levelone.htm

  • Click the door

Level 2

http://notpron.org/notpron/not/level2.htm

  • Tab your way to the door knob, then enter

Level 3

http://notpron.org/notpron/false/movetotheothersite.php

Level 4

http://notpron.org/notpron/true/movetotheothersite.php

  • title: Look in the dark...
  • Password Hint: LightThisPlaceNow
  • Morse code on the bedside table
  • click the coin
  • usr/psw: voodoo/magic

About all passworded riddles:

  • No spaces
  • No capital letters
  • You don't need to register anywhere
  • Do not use Chrome, Opera or Vivaldi; use Firefox, Safari, Edge or IE instead
  • You will find the username and password written somewhere in the riddle in a hidden way (very different in every level)
  • No guessing! You will know when you have the answer. No need to enter random words that you find somewhere.
  • A slow internet connection can cause a correct password combination to be refused. When you KNOW that you have the right one and it's not working, try it again until it works.

Other:

  • don't hesitate to use external programs to solve riddles, some even require it (all you need can be legally downloaded somewhere)
  • the only rule is NOT to search for solutions on the web, but google gets you other useful hints if you look for the right things

Level 5

http://notpron.org/notpron/google/shestheoneforme.php

  • title: Light your torch
  • Eyes like an angel smiles like a devil
  • What was the name of this song again? in the source code
  • Password Hint: live
  • Click the power on button on the remote
  • Googling the song yields "Simple Songs"
  • usr/psw: simple/songs

Level 6

http://notpron.org/notpron/nothing/hesgotitall.php

  • title: ...the source code might help...
  • Blow the image: an ALTernative?
  • Password Hint: anagram
<!--ascii is an alternative-->
href="../sdrawkcab" => backwards
src="../stuff/mine.htm" has 

108 105 108 107 => lilk => kill
101 122 111 110 => ezon => zone
  • click the drum label
  • usr/pwd: kill/zone

Level 7

http://notpron.org/notpron/sdrawkcab/tieman.htm

  • tieman => Name It
  • title: he went to the old school
<!-- times have changed in deutschland -->
<!--what candy wrapper is it?-->

Level 8

http://notpron.org/notpron/sdrawkcab/rediar.htm

  • title: say it loudly and proudly
  • Password Hint: mom, he formatted my second song
  • JAY should PACK his stuff <au dio src="../stuff/mus2.mp3"> => looks weird
$ wget http://notpron.org/notpron/stuff/mus2.mp3
$ file mus2.mp3
mus2.mp3: JPEG image data
$ mv mus2.mp3 mus2.jpg
$ open mus2.jpg
  • yields image of name: inverted password: tenthlevel
  • click the guitarr drum
  • usr/psw: inverted/tenthlevel

Level 9

http://notpron.org/notpron/luv2music/paulisdead.htm