I really like the concept of this game. It feels like a really interesting starting point for a slightly larger project. The visual design has a very simple yet intriguing style which reminds me of some tarot decks I've seen before.
The gameplay goal is simple but still feels fun and challenging. My main concern is that there isn't a lot of communication about which direction the ring is going to move and the moving is currently very sudden. A turning animation of the ring snapping into place as it rotates might be nice and some kind of indicator about the current direction of the ring might help the player prepare a bit more.
Additionally, I like the visual differences between the blocks but it does feel as though they might be used in some other way other than just looking different. Maybe some kind of UNO like system where each ring section has a different shape on it and you can match either the color or the shape?