Best way currently is go to my Patreon - Fallen Eros to find the latest build with all the content so far.
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Hi. The game doesn't update itself, you have to download it each time. In Patreon you get early access to the latest build. If you want the whole game as a single purchase you can follow me here on itch and follow on Patreon (for Free) to get updated when it's released. Also you can follow my Steam developer profile to be notified.