Metal Mech is a sci-fi action-platformer published by Jaleco for the NES. You control a robot, fighting through levels to stop an alien invasion. The gameplay involves platforming, shooting, and using a variety of weapons, including lasers and missiles. A unique feature is the "mech" system – you can transform into a more powerful robot form for limited periods, gaining extra firepower and defense. The levels include factories, alien worlds, and space stations, each with unique enemies and hazards. You can also collect power-ups and energy capsules. The game features a health bar and a continue system. A trivia: the game was developed by KID Corp., who also worked on "Low G Man." The graphics are colorful and detailed, with a sci-fi theme that includes neon colors and futuristic backgrounds. The music is electronic and fast-paced, composed by the Jaleco sound team. Critics praised the transformation mechanic and the challenge. It supports one player. The final boss is an alien overlord that requires precise timing. Metal Mech is a solid action game for sci-fi fans.