Mercenary, 1985, Atari

A COMPENDIUM EDITION OF THE PAUL WOAKES CLASSIC
MERCENARY I
ESCAPE FROM TARG WITH THE SECOND CITY

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Mercenary is a 3D action-adventure game written for the Atari 8-bit computers and published by Novagen Software in 1985. It was converted to the Commodore 64, ZX Spectrum, Amstrad CPC, Atari ST, Amiga, Commodore 16, and Plus/4. The game uses vector graphics renderings of vast, sparse environments and has various methods of completing the game. It was also released as Mercenary: Escape from Targ and Mercenary: A Flight Simulator Adventure.

https://en.wikipedia.org/wiki/Mercenary_(video_game)