Armour-Geddon is a post-apocalyptic 3D strategy/simulation game created by Psygnosis and released for Amiga, Atari ST, and MS-DOS in 1991.
The game is a mix of strategy and 3D vehicle simulation. In the strategic mode, you can decide how to assign scientists and engineers to research and develop new weapons. In simulation mode, you can pilot several vehicles, including helicopters, hovercrafts, and tanks. Armour-Geddon was ahead of its time and received highly positive reviews, especially the Amiga version. The only downside is the difficulty. Don't forget to download the manual.