3D Space Ranger

3D Space Ranger is a video game published by Microbyte Software for the BBC Microcomputer in 1983. Bares some resemblance to Buck Rogers: Planet of Zoom.

This is a third-person space shooter in which you shoot alien spacecraft and fly through asteroid fields, avoiding contact with asteroids on the way. Eventually you will come to a trench where you have to follow the instructions on the upper left to build a weapon.