This is a good fast paced little shooter. One of my old favorites. Once you get the hang of the controls ie there is no left/right, just a thrust key and turn key, there really is a lot of fun to be had. Lots of different little aliens that behave in different ways. Very smooth movement and scrolling, bombs that destroy all on screen, a cloaking device and teleporting device.
A few graphical glitches here and there are the only problems but they're not so bad that it ruins the game.
128k version has much better sound effects than the 48k version. Both versions make very good use of colour. Great for playing for short amounts of time. Very addictive. 4/5
http://www.youtube.com/watch?v=IeIjKuE1pTA