Tensor 1 currently runs a Steam playtest in order to obtain feedback on an in-development build of the game. To avoid potential confusion, here are a few important points about the playtest:
Question: What is contained in the playtest?
Answer: The playtest contains all game content planned for the initial launch of the full game. It is like a Steam "free weekend" stretched over two weeks. The only other important difference from a real Steam "free weekend" is that the playtest does not include Steam Achievements or Steam Cloud Saves, because Steam Playtests must use a separate appID from the main game.
Question: How long will the playtest last?
Answer: Signups for the playtest will close on November 12th. The playtest itself will close on November 19th with the launch of the full game.
Question: How can you offer a single player game for a "free weekend?" Do you hate money?
Answer: Testers are being rewarded with free access to the game to compensate them for spending their time on a technically unfinished product and for their time spent giving feedback to improve that product.
Question: How do I sign up before it closes?
Answer: Go to the main store page, scroll down to "Join the Tensor 1 Playtest," and select "Request Access" while the option is still there.
Question: I'm from the future, reading really old event posts for some reason, and upset that I missed out on the playtest. What do I do?
Answer: Don't lose hope. The playtest may open again one day in the future, should the game ever need to test out an experimental content update. (Disclaimer: This is not a promise of any future content updates. Do not purchase the game based on any expectations of future content updates.)