Published in the book The Giant Book Of Games For Your BBC Micro from Fontana Publishing. The book contains the following description:
You are the submarine at the bottom of the screen in the game, and your task is to destroy all the ships as they sail overhead. You are fighting against the clock all through the game, and have only one minute to accomplish your mission.
You move your sub left and right with the CAPS LOCK and CTRL keys, and fire using the RETURN key. The smaller the ship, the faster it travels, and the points you score are related to the size of the ship and how far away from you it is. You can only fire one torpedo at a time.
|Primary genre||Shooter (Gallery)|
|Compatibility||A:✘ B:✔ Master: Untested|
|Compilation||Giant Book Of Games For Your BBC Micro (BOOK)|