Immediately, the UI is pretty basic. Aside from that, this game's visuals look decent. Animations look well done and give ample feedback, tho particle effects upon clearing runes would help. The lack of sounds of any kind makes the experience a little ... underwhelming? I'd also argue that it would be wise to try and speed up the game a bit. I also noticed that you can move pieces while they're still falling, which at first I thought was a cool combo mechanic ... until it glitched the game into leaving blank spots on the board and completely changing others. Maybe should add more checks there.
Overall, an interesting system with potential if you turn glitches into mechanics, but it definitely needs some more work to be a solid game.
Also, I was able to score extra points while the results screen was happening, so that happened.