Definitely an okay game with the potential to be a great one, but there have been a few instances where I make a move and  I'm just stuck and can't make any more moves and have to go back to the main menu to reset.

Also I would really like for there to be a volume slider of some sort.

A tutorial level would be quite cool too.

Just add a story, a skill tree, and some progression and you have solid game right there. The mechanics themselves are pretty decent from what I've seen so far.