Battletech: Gray Death Legion is a cancelled mech game that was in development for the Saturn and Sega Mega CD at Absolute Entertainment in 1995, before the closure of the company. The project was based on a fictional mercenary company that exists within the fictional BattleTech Universe and probably the gameplay was going to be similar to other mech games, with mission-based levels and first person shooter view.
It’s currently unknown if the Saturn version was similar to the Sega Mega CD one or if they were 2 different games. A playable beta demo of the Sega Mega CD version was leaked somehow and it’s available at Good Deal Games. As we can read from the description:
The Gray Death Legion is a mercenary regiment within the Battletech universe. This game demo does not have audio, but is very playable and a blast at that! The game plays very similar to the excellent AH-3 Thunderstrike. Battletech: Gray Death Legion makes use of the Sega CD’s scaling and rotation hardware to create an impressive 3D environment with a smooth frame rate. Features a very long 3D animated Battletech intro that is also very impressive.
Thanks to Celine for the contribution (scan from GamePro #79)!