Super Metroid starts off right where Metroid II left off. Samus is doing a report on her first two mission. She reports that after a Metroid larva hatches, the first thing it sees is Samus. Being the first thing the Metroid saw, it thought that Samus was it's mother. Samus collects the Metroid and brings it to Ceres Space Colony in hopes that the scientists could learn more about it. Samus leaves the space colony thinking all is well. Shortly after leaving she receive a distress call from Ceres and she head back. This is when you take control of Samus. When you arrive, you find all the scientists dead and the Metroid larva missing. As you search the colony, you find the larva in a back room. As soon as you go for the Larva, Samus's old enemy Radley, the leader of the Space Pirates, appears and grabs the Metroid. After a quick battle Radley flees and Ceres Space Colony goes into a self-destruct mode. You now have to beat the count down and rush back to your ship. Once you get to the ship you escape the colony and follow Radley to the Space Pirate's home planet, the planet Zebes.
Zebes is a huge planet that has many different caverns that lead to different parts of the planet. You have to go into the caverns in a certain order. In each area you get power ups that will help you with the next. There are five main areas of the planet, Crateria, Brinstar, Maridia, Norfair, and Tourian. Each area has its own power ups along with mini-bosses and a main boss. And you need to defeat the four bosses to unlock the final area and get to the final boss.
Even though Crateria is the surface of the planet, the first place you want to head to is Brinstar. Brinstar is made of a jungle and dry rock area. This area is also as the Space Pirates home base. You can find a lot of your starter power ups in this level including your first power up suit, Varia Suit. You also have to fight two mini-bosses, King Worm and Spore Spawn. After dealing with them and before you can finish out Brinstar, you need to defeat Kraid, the main boss.
Now that you have the Varia Suit, you need to go through parts of Norfair next before you can get to the next boss area in Wracked Ship. In Norfair, a volanically-active area deep in the planet, you need to find the grappling beam. Even with the new suit you have, you can not go to every area of Norfair with out the Gravity Suit. So once you get what you can in Norfair you need to head back to Crateria where the Wracked Ship area is.
Grappling across all the obstacles to get to the Wracked Ship is easy now. Once you get in the ship, everything is quite. No signs of life and a few dead bodies. You fight the boss of this area right away as this area is more obstacles and low enemies. The boss at Wracked Ship is Phantoon.
Now you got the Gravity Suit I like to head to Maridia before heading back to Norfair. There are a couple power ups like the space jump you will need before you head back to Norfair. Maridia use to be apart of Bristar. But now is completely under water. The Gravity Suit comes in handy here too because you can not fully scout this area with out it. There is only one mini-boss in this area called Botwoon. The leader of this area is called Draygon.
After a few of those shots, you can no longer stand or defend yourself. Right as Mother Brain charges up for the final blow, the huge Metroid returns and attacks Mother Brain. It starts draining all of Mother Brains energy making her start to turn to dust. Now that Mother Brain is down, the Metroid covers you. You think it is going to be attacking you when you realize that is is restoring your life. As the Metroid does this, Mother Brain get her strength back and starts attacking the Metroid. Right as it charges Mother Brain again, it dies and disintegrates on top of Samus. You are now back to full power plus some. You also have now have a super power cannon that you use to destroy Mother Brain for good! Now that Mother Brain is gone the planet goes into a self-destruct mode. Once you flee to your ship, you fly out to space as the planet explodes and the game ends.
There was so much action in this game with challenging enemy's and bosses. It had a great story and music that kept you wanting more. This is the reason why in my opinion, Super Metroid is the best game for the Super Nintendo.