The Additional Dimension is free on itch.io: claim it before Oct 5

The Additional Dimension is a small indie game that takes the eerie, liminal feel of the Backrooms and moves it into a Soviet setting. It usually sells for $1.99 on itch.io, but for a limited time you can claim it for free until October 5.

It suits players who like atmospheric, unsettling spaces and short indie experiments, especially fans of Backrooms-style horror and exploration. The game runs on Windows and Linux, so check that one of those is your platform before you grab it.

Once you claim it while the price is zero, it is tied to your itch.io account and stays in your library after the deal ends, so you can download it whenever you want. If you're not sure you'll play it soon, claim it anyway, because it costs nothing now.