here you have an offline version :D
basically, the first link will download the html file of the game that is being executed in itch.io, and the second one is the place where itch.io saved it
(compression file for local execution if ya want)
https://www.mediafire.com/file/w5fd3me3ege8rmb/sturissea3.6.zip/file
Virustotal scan just in case
https://www.virustotal.com/gui/file/bd93cb1184f913072d65c52a93fc75b5c0145b0f8276...
(the game that have itch.io)
https://html-classic.itch.zone/html/15533728/index.html