Screw Attack in an important item in the Metroid series. They are also used as weak items in the game, Super Smash Bros. Melee. If a player were to press A near a Screw Attack, he/she would pick it up. If the player were to jump with one in his/her hand, the jump would be very similar to Samus's third jump, which is also named Screw Attack. Also, if there was another player around the player who jumped with a Screw Attack, that player would take minor damage. These items can also be thrown into another player for minor damage. Also, when thrown, anyone it hits will automatically perform a Screw Attack. Although this hurts them, if they are close to the player when hit, they will hurt him/her. The item will return in Super Smash Bros. Brawl, however, now, when it is picked up, it attaches itself to the player, much like the Franklin Badge. This allows a player to use the Screw Attack's powers, while using another item.
Trophy Information from Super Smash Bros. Melee
One of Samus Aran's power-ups from the original Metroid, the Screw Attack turns a jump into a rotating attack move. When carrying this item, any character's ordinary jump move will turn into a Screw Attack. By the same token, if you throw this item at an enemy, your foe will spontaneously do a Screw Attack.
Trophy Information from Super Smash Bros. Brawl
A badge you can wear to turn your jumps into Samus's signature Screw Attacks. In Super Smash Bros. Melee, it was an item you carried, but this time around it's a badge you wear--which means you can use it and another item at the same time. There's a good chance you'll be able to string together Screw Attacks and midair strikes for powerful combos.