Detector

Detector is a Shoot 'Em Up game, developed by Amiga Artists and published by Time Warp Productions, which was released in Europe in 1988.

This is 2D top down shooter, something like part of Thunder Force II. The player controls a ship and flies over surface of the planet. Game has open structure - the player freely moves on islands, searches keys, various bonuses (hidden in special squares) and destroys many enemies. Game has "tank control" - the player can rotary ship in 360 degrees and moves by speed up.