When you complete the game then it gives a link on the wall (that link redirecting to postImg.cc/wtsSWWzW) on the bottom of the image is the morse code -.-. .- .-. - .- ..- -..- .-.-.- -. . - -..-. .-- .- .-.. .-.. which translates to http://cartaux.net/wall, which is a page on the creators website, the page is broken... please fix it
EDIT: The creator (as you can see in the replies) informed me that the link is actually http://cartaux.net/WALL, It leads to a QR code that gives us https://www.youtube.com/watch?v=GUs0BDWpM2Y. Now though the video is weird, something else is also weird, the title and description is encoded, Specifically in Hexadecimal (BASE16). Decoding the title gives us "Allwch chi siarad ag ef?", and the description gives us "Tomorrow". i tried multiple different ciphers, but none of them gave a comprehend-able sentence, so now i need more help to decode this.