Since you are on Itch, I would guess the game in question is in development, or in other words: not finished. You might have reached the end of the available content.
But ask this at the game page. Maybe there are devlogs or changelogs that say how much content there is. Some developers use version numbering. There is no universal agreement how to version, but something with version 0.1 or 0.2 usually is far from finished.