Sonic Battle Overdrive

Sonic Battle Overdrive (ソニックロックンランブルSonikkurokkunranburu, lit. Sonic Rock 'n Rumble in Japan), known as Sonic Battle 2 in Europe, is the sequal to Sonic Battle. Exclusive for the Nintendo 3DS.

Gameplay
Sonic Rock 'n Rumble is the same as it's prequal, but with upgraded and updated gameplay.

The Touch Screen allows the player to see the current Vitality and Special Gauge of its teammate(s). The Touch Screen also shows a Special Move that can be performed while on a certain level of the Special Gauge, which is 2, 3 for Zemerl. On level 0 (1) shows the player can perform a Lvl 1 Special Move (Zemerl can only perform this with a cost per bar), on level 1 (2) the player can perform a Lvl 2 Special Move, finally, on level 3, the player can perform a Team Special, which requires 1 or 2 teammate(s) to activate. If without an ally the player will perform a Ultra Special, though it is powerful, it's not as strong as the team version.

The game also introduces the ability to go head-to-head wirelessly or on the internet. Like Mario Kart Wii/7, chosen (or voted) stages will be selected randomly.

and Challenge Mode has changed to Arcade Mode!

Default

 * Sonic
 * Tails
 * Knuckles
 * Amy
 * Cream [w/ Cheese]
 * Shadow
 * Rouge
 * Silver
 * Blaze
 * Espio
 * Charmy
 * Vector

Unlockable

 * Chaos Gamma (obtain a score of 10000 in Arcade Mode; default in Japanese version)
 * E-123 Omega ( obtain a score of 20000 in Arcade Mode; default in Japanese version)
 * Chaos 0 ( obtain a score of 25000 in Arcade Mode; default in Japanese version)
 * Osnic (unlocked by beating him in any round while in Hard difficulty ; can't copy actions, attacks, etc. into Data Cards)
 * Normal T-Rex / Dragon T-Rex ( unlocked by beating him in any round while in Hard difficulty ; can't copy actions, attacks, etc. into Data Cards)
 * Darkspine Sonic ( unlocked by beating him in any round while in Critical difficulty ; can't copy actions, attacks, etc. into Data Cards )
 * Excalibur Sonic ( unlocked by beating him in any round while in Critical difficulty ; can't copy actions, attacks, etc. into Data Cards )
 * Pursuit (unlocked by beating the game and triggering the Secret Ending, then beating him at Central City ; can't copy actions, attacks, etc. into Data Cards )
 * Tome (unlocked by summoning him through the Master Emerald at the Chao Shrine, then beating him ; can't copy actions, attacks, etc. into Data Cards)
 * Zemerl - The fusion of Gemerl and Emerl's soul inside the Chaos Shard. It resembles heavily to Emerl, but kept a few designs on his head.

Game Modes

 * Story Mode
 * Arcade Mode
 * Trial Mode
 * Local VS
 * Online VS
 * Tutorial
 * Training
 * Battle Rankings
 * Extras
 * Options

Trivia

 * Zemerl's name was originally intended to be called Xemerl with the first letter resembling/based on Sonic X, but because of the show's poor critisism by the fans, it was later changed to Zemerl (with the first letter similar to Dragon Ball Z!).
 * More soon, have to got to bed.