This is the most beautiful arcade game for the TI that I have ever seen.
The use of the speech synthesiser from within the program is excellent. It simulates an on-board combat computer warning you of impending attack and other warnings such as running out of fuel, and it (or rather *she* as it is a female voice) will give encouraging remarks as to your progress; a pleasant change from some sarcastic computer games.
The concept of the game is similar to the scramble/defender type, with the space ship travelling horizontally across a moving planetary surface strewn with objects. If you hit this you lose one of your initial five lives. New ships are granted at regular intervals.
There are eight different types of nasties out to get you and they come in waves, so you have to destroy all of the first type before you go onto the next. If this is not enough for you, you are in constant danger of your laser overheating and your ship blowing up, running out of fuel and having to fly down a tunnel to get some more, and flying through an asteroid belt.
There are 16 different levels to get through, and although I have been playing this game for a week now I have only got to level 4, so it is very challenging.