Metaltech: Earthsiege is an action game (FPS) released in 1994 by Sierra On-Line. The game was released for PC (DOS).

The action takes place in the future - in 2471. Sentinel Cybertronix launched the project under the code name Promoteus. Promoteus was a prototype of a cybernetic hybrid machine - Cybrid. Mass production and use of them in wars - led to the outbreak of nuclear war and the machine turned against humanity. Few people hiding from rebel machines try to resist them.

In the game, you play as a soldier - a military mecha pilot. Your task will be to fight Cybrids. You will have 45 missions to perform in which you will be among others he conducted reconnaissance, escorted and fought against enemy robots.