Bound Jump

The Bound Jump (バウンドジャンプ), also known as the Bounce Attack (バウンドアタック), Bound (バウンド) and much more, is a recurring move in the Sonic the Hedgehog series. When performing this technique, the user launches a downard Spin Attack, often with rebounding results.

Description
When performing the Bound Jump, the user stops up while in midair where they curl into a ball and Spin Attack straight downwards to slam down on any target below them. When the Bound Jump impacts the ground, it will often bounce the user back into the air, while also occasionally creating a shockwave.

In gameplay, the Bound Jump is useful for reaching targets below the playable characters just as they jump/fly over them with an attack, allowing the player to damage enemies, break weak obstacles and certain platforms, and open Item Boxes in the user's path. Also, the Bound Jump can be used for elevation in the games where it rebounds the player upward; when used in quick succession in such cases, the user will gain a little extra altitude with each repeated bounce until they reach a certain height. This is useful for reaching areas that are otherwise difficult to get to.

Sonic the Hedgehog 3 & Knuckles
The Bound Jump first appeared in Sonic the Hedgehog 3, and later in Sonic & Knuckles and its locked-on version, where it is called the Continuous Bound (連続バウンド). In this game, only Sonic the Hedgehog can use the Bound Jump, and only if he is equipped with the Water Shield.

In gameplay, the Bound Jump can elevate the player after impact. To perform the Bound Jump in gameplay, the player must press, or  while in mid-jump. When rebounding from the Bound Jump, press, or  to use it again. If the attack is done on top of a Badnik, the player can achieve a vast jumping increase, especially if this is done underwater.

Sonic Adventure 2
In Sonic Adventure 2, the Bound Jump is referred to as the Bounce Attack (バウンドアタック). In this game, only Sonic the Hedgehog can perform it in regular gameplay, and only if he is in possession of the Bounce Bracelet. In 2P Battle Mode, Amy Rose is also capable of performing this technique.

Like in Sonic the Hedgehog 3, the Bound Jump can elevate the player after impact in gameplay. To use the Bound Jump in gameplay, the player must press / while in mid-jump. When rebounding from the Bound Jump, the player can press / to use the move again. It should be noted that the attack can be done indefinitely.

Sonic Advance 2
In Sonic Advance 2, the Bound Jump is referred to as the Bound (バウンド). In this game, it serves as both one of Sonic's regular moves and his Stop 'n' Slam maneuver. When using it, Sonic will leave blue afterimages.

When used in Sonic Advance 2, the Bound Jump cannot elevate the player after impacting the ground. To use the Bound Jump as a regular move, press while in mid-jump. To use it as a Stop 'n' Slam maneuver though, press down on and the R Button at the same time after being launched into midair by gimmicks like the Spring and Ramp. When used as the latter maneuver, the Bound Jump will not cancel the momentum Sonic receives from the Boost Mode.

Sonic Advance 3
In Sonic Advance 3, the Bound Jump is referred to as the Bound Attack and serves as one of Sonic the Hedgehog's moves. In this game, Sonic can only use the Bound Jump when having Knuckles the Echidna as his partner.

For this game, the Bound Jump retains the mechanics and visual presentation it had in Sonic Advance 3. To perform this technique in gameplay, the player must press down on and  at the same time while in mid-jump.

Sonic the Hedgehog (2006)
In Sonic the Hedgehog (2006), this technique is referred to as the Bound Jump (バウンドジャンプ) for the first time. Like in Sonic Adventure 2, it is only usable to Sonic the Hedgehog, and only when he is wearing the Bounce Bracelet.

In this game, the Bound Jump can elevate the player after impact in gameplay. In addition, it creates an aura around Sonic which is useful for attacking aerial enemies and dealing extra damage to huge enemies, although it makes Sonic lose all forward momentum (unlike in Sonic Adventure 2). To perform the Bound Jump in gameplay, the player must press / while in mid-jump. When rebounding from the Bound Jump, press / to use it again.

Sonic Generations
In the console/PC version of Sonic Generations, the Bound Jump retained its name from Sonic the Hedgehog (2006). In this game, it is only usable to Classic Sonic while he is equipped with the Aqua Shield.

In gameplay, the Bound Jump can elevate the player after impact. To perform it in gameplay, the player must press / while in mid-jump. When rebounding from the Bound Jump, the player can press / to use the move again.

Sonic Lost World
In both version of Sonic Lost World, the Bound Jump serves as one of Sonic the Hedgehog's regular moves.

In the Wii U version of the game, the Bound Jump can elevate the player after impact. However, Sonic is limited to only three successive bounces with this attack, and after the third bounce, he jumps out of his ball form and down on his feet. The damage it deals is the same as a regular Homing Attack and it can only be triggered in areas with no targets or after hitting an enemy, making it hard to perform. This also causes it to glitch when used on an enemy with multiple target points. To use the Bound Jump in gameplay, press / while in mid-air.

In the Nintendo 3DS version of the game, Sonic can perform multiple Bound Jumps, like in earlier games. Here, it is useful against Grabbers and similar enemies.

Trivia

 * A trick with the Bound Jump is a move dubbed a "Super Bounce" where a tremendous amount of vertical distance is possible. To do this, you spin dash into a wall. Upon collision you press A then B in a split time frame. Because a bounce is determined by the velocity of the downward bounce, unnatural speeds cause a giant bounce. This allows the player to do multiple tricks, such as getting back onto the first roadway of City Escape.
 * The Bound Jump in Sonic Adventure 2 works in a similar way to the Butt-Bounce ability in the Pac-Man series.
 * When using Sonic's Bounce Attack in Sonic Adventure 2, if the player pauses the game and removes the pause menu with X and Y, he /she can see Sonic's Power Sneakers in his slightly blurry ball animation instead of his Hi-Speed Shoes.
 * The Bound Jump seems to exist in Shadow's files in Sonic Adventure 2, as it can be playable via recovering or codes without any crashes. However, its mechanics are not completed as it can be used to gain altitude, but cannot deal damage.