Very neat game, though I do think that the constant switching between moving and having the game play out is fairly annoying, how about having it step automatically once every second or so? I think having that along with the player being able to speed it up might make it more interesting, possibly creating new opportunities and all
Of course it's your game and all, I don't really know what you have in mind for this game, this is just a suggestion incase your idea for the game happens to align with this one at all
Keep it up!