Metroid is a Nintendo Entertainment System action-adventure game in Nintendos Adventure Series. The game sends its armored hero into the fortress planet Zebes, where secret passageways, hostile creatures, and the threat of Mother Brain shape the mission.

• Cleaned, tested, and guaranteed to play. Authentic cartridge.
• Exploration-driven action blends side-scrolling combat with maze-like routes through the planets connected areas.
• Power items expand the search, including the Ice Beam, Wave Beam, High Jump Boots, and Varia.
• The story centers on stopping Mother Brain from using the multiplying Metroid creatures to endanger the galaxy.
• Two-player alternating play lets players take turns progressing through the adventure.

Metroid introduced the planet Zebes and Mother Brain as core elements of the series, establishing the exploration-and-upgrade structure later expanded in Super Metroid.<