Some of the later levels on this?
https://en.wikipedia.org/wiki/Notpron
“Notpron is an online puzzle game and internet riddle created in 2004 by German game developer David Münnich. It has been named as ‘the hardest riddle available on the internet.’”
“Notpron follows a standard puzzle game layout, where the player is presented with a webpage containing a riddle and must find the answer to the riddle in order to proceed to the next webpage”
“Each level answer or solution is unique, often requiring specific skills such as decoding ciphers, image editing, musical knowledge”
“As of October 2020, only 100 people have completed the game, out of 20 million visitors since August 2004”
I’m afraid so. Sorry. We hope to run more in the future!