You are the pilot of a plane which is running out of fuel. Your height is decreasing with each pass around the screen. To land safely you must flatten the buildings by bombing them.
You've probably realised this is an M5 version of that classic arcade game. Although the program is written in Basic-I, the sound is satisfyingly different, the plane looks like a plane and it rumbles across the screen as it should.
The action is relatively fast and I found the game fun, at least for the first few goes. Nice features such as a neat title page, instructions and various skill levels show that quite a bit of thought has gone into the design but ultimately it must be said that this is the type of game published in magazines within two weeks of a new machine's launch. It would never be sold commercially for the more popular machines.
It is sad this isn't the case with the M5 and you must fork out £5.95 for a rather simple, pure Basic game, instead of just typing it in.