Because if it isn't, please take this offline. This seems free, the steam version costs money. Itchio shouldn't degrade into a demo-only platform. Put your full game on here or go away.
Walk upon the Ravenfield with your BLUE allies! · By
It's not up to date with the steam version for the simple reason that itch.io is less secure than other platforms. selling small games here is fine because less people will try pirating it, but larger releases should be moved to other platforms because of the more lax security and because of itch's reputation.