A solid mini-metroidvania.  Explore the world, collect powers, use powers to explore more, get all the gems and win.  Some minor technical glitches - play became progressively slower when played inside a browser until it took minutes to change screens.  Download the standalone version and play that instead.

A competently implemented game, with an interesting twist on tetris.  Not particularly easy to develop a strategy for, though, and working hard to form words tends to go unrewarded.  Fun to play semi-randomly for a few minutes.

A slightly different mode, where orphaned letters are affected again by gravity, might be a lot more fun.

I like it.