 | Blue Doors | These doors are the most common to be found on Zebes. Just shoot them with your normal gun to open them. |
 | Purple Doors | These doors can be opened by shooting them with five missiles or one super missile. |
 | Green Doors | The green doors can only be opened by shooting them with one super missile. |
 | Yellow Doors | These doors must be opened by detonating a power bomb. |
 | Metal Doors | These doors only open after a special task has been performed or until certain enemies are destroyed. |
 | Guard Doors | These doors appear just outside the room of a large boss. They open their eyes when you get too close and fire at you. To destroy them, just shoot the eye with missiles or super missiles when it opens. |
 | Blue Panels | These can be opened by shooting the blue button with your normal gun. |
 | Green Panels | These can be opened by shooting the green button with a super missile. |
 | Crumbled blocks | When you fall through some areas on Zebes, the ground forms these blocks that cannot be destroyed unless you step on them. |
 | Hook blocks | Using the Grappling Beam, you can use these to swing across dangerous areas. |
 | Crumbling hook blocks | These hook blocks break after a few seconds so you have to be fast. |
 | Speed Booster blocks | These blocks can only be broken through using the Speed Booster and running very fast through them. |
 | Crumbling blocks | These blocks vary in looks but can be destroyed with your normal blaster or a bomb. |
 | Super Missile blocks | These can be destroyed by shooting one super missile at them. |
 | Power Bomb blocks | These can be destroyed by setting a power bomb off. |
