As you described it, the game is pretty unique. In fact, I've never played one quite like it. It is a little hard to get a hang of, but after a while the game play becomes more familiar. The game was a little modest, which made getting used to a little easier, and overall a unique and fun game.
The sound effects were a little bland for my tastes. Perhaps something a little more interesting besides just the one explosion. Maybe switch it up for different things. Also, could use some graphical enhancement.