The game is viewed from the side and is divided into sectors of the B.S.L. research station. Samus explores rooms, defeats enemies, finds routes through obstacles, and accesses navigation rooms to receive mission objectives.

Progression comes from acquiring abilities and upgrades, including missiles, bombs, the Morph Ball, new suits, and beam enhancements. These tools open previously inaccessible paths and help defeat increasingly dangerous creatures. The campaign uses save rooms, map stations, elevators, boss encounters, and environmental hazards to structure exploration.

Explore each sector methodically and inspect the map for unvisited rooms, narrow passages, and suspicious dead ends. Save often, especially before entering unfamiliar areas or approaching a boss.

Use the scan and observation elements of the environment to identify destructible blocks. Preserve missiles for enemies and bosses that resist normal beam fire, and learn the SA-X's movement patterns rather than attempting to fight it before the game allows it.