Your cannon stays in one spot and you just spray out bullets. I think it is really lame that whenever a stronger unit comes on screen you can buy a mine and drop it right in front of it to blow it up. Game is short as they only demo the first two levels for you. Overall graphics are ok but the game is long and boring without a lot of variation.
Graphics are ok. Game play is slow and unresponsive. A straight back and forth shooter. I use to play games like this on my Atari 2600 30 years ago. Don't waste your time.