Snappy graphics and game play. A tad difficult in the beginning...
Pros: Snappy graphics , good set of challenges all along , great shooting controls
Cons: A tad difficult , no save game in between levels
I liked the way the green centipede aliens attack you :p . Also there is this crazy attack of meteorites all the time. To tackle all the craziness of attack going around you have an array of weapons that you can change/select, even has a bomb that can be thrown to clear the screen of all aliens/meteorites and tiny red bomb thingies.
The only thing I found to be annoying id the save feature. There is no save between levels and you have to start from the beginning if you lose all your lives ( which is very easy, with all the holy cow attack on you ! )
All in all a decent game to get you hooked up for that 5-10 minutes diabolical shooting spree ;)