the game works normally, probably the previous two people who wrote the comment have installed it without crack which is there . Thank you very much for uploading this game
The instruction to click "Copy Crack" should be in Pt.96 font with bold letters on every Rune/Codex crack lol. I think it's a comment on every one of their cracks.
Because you still not crack it before start game. After install, you must open .iso file, you will see "RUNE" folder, copy all files in that folder and paste to your game's dir, enjoy ;)
https://www.youtube.com/watch?v=0iEBsfbpuqQ
https://youtu.be/MsESlq7YGZI
https://youtu.be/Kddi8KPxpNg
https://youtu.be/l2ThXNdR2tE
https://youtu.be/n_2pGL9bDUg
You can see tutorial here too (it same for almost games):
https://igg-games.com/how-885614657-to-install-game-and-update.html