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.

Touch Screen
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. 6 for Zemerl (the first 5 are 10% each).

New Mechanics
On level 0 the player can perform a Lvl 1 Special Move (Zemerl can only perform this with a cost per bar), on level 1 the player can perform a Super Special, finally, on level 3, the player can perform either a Team Special, which requires 1 or 2 teammate(s) to activate, or activate Super Form (only if no teammates are present). Both the Super Special and the Team Special requires making contact with a foe (or also rush into them) in order for it to activate. The game also has an option in the Options mode called Classic Specials (ON/OFF) which turns the Special Gauge into the one from the original Sonic Battle game. When at full the characters start to flash as well as their icon and gauge, and the Special Moves that hit any characters will instantly KO them, but only works once per full gauge, hit or miss.

Zemerl, unfortunately, is unable to use a Super Form (excluding Omega Zemerl who is exclusively as a final boss) or participate in any kind of Team Special and can only use his own Super Special, which is Finale (though during his Omega form his Super Special is turned to Omega Finale, which is stronger than a Team Special since it can cause an imitiate Game Over in 1 hit) or "Combo" Data Cards obtained from approaching the SONICTEAM billboard.

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.

Default

 * Sonic
 * Tails
 * Knuckles
 * Amy
 * Cream [w/ Cheese]
 * Shadow
 * Rouge
 * Silver
 * Blaze
 * Espio
 * Charmy
 * Vector
 * Zemerl: (Sorta) New! - 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.

Unlockable
"*" = Can't copy actions, attacks, etc. into Data Cards. Forms' can't be copied, either.
 * Chaos Gamma (obtain a score of 10000 in Arcade Mode; default in the Japanese version)
 * E-123 Omega ( obtain a score of 20000 in Arcade Mode; default in the Japanese version)
 * Chaos 0 ( obtain a score of 25000 in Arcade Mode; default in the Japanese version)
 * Osnic* (unlocked by beating him in any round while in Hard difficulty )
 * Normal T-Rex / Dragon T-Rex* ( unlocked by beating him in any round while in Hard difficulty )
 * Tome* (unlocked by beating the game and summoning him through the Master Emerald at the Chao Shrine then beating him )
 * Pursuit* (unlocked by beating the game and triggering the Secret Ending, then beating him at Central City)

Super Forms

 * Sonic (has selectable Super Forms)
 * Super Sonic (simply collect all 7 Chaos Emeralds)
 * Darkspine Sonic ( unlocked by beating him in any round while in Ultimate difficulty , but not before beating the game)
 * Excalibur Sonic ( unlocked by beating him in any round while in Ultimate difficulty, but not before beating the game  )
 * True Deeth (Death) Sonic / El Diablo Sonic (unlocked by beating the game, then challenge Chaos Gamma as Zemerl in a 30-KO Battle to obtain the Flame Emerald... But you only have 1 life. In the North American version you're challenged in a 25-KO Battle with only 3 lives)
 * Amy
 * Super Amy: New!
 * Shadow
 * Super Shadow (simply collect all 7 Chaos Emeralds)
 * Silver
 * Super Silver (simply collect all 7 Chaos Emeralds)
 * Blaze
 * Burning Blaze (activate "Event Time" with the Master Emerald)
 * Chaos 0
 * Chaos 2 (activate "Event Time" with the Master Emerald)
 * Osnic
 * Ultra Osnic (win every round while in Ultimate difficulty)
 * Pursuit
 * Pursuit: Dragon Mode
 * Pursuit: Feral Mode (Down D-Pad + Y in battle)
 * Pursuit: Beast Mode (Down D-Pad + X in battle)

Bosses (Non-Playable)

 * Eggman (Eggmobile)
 * Egg Hornet
 * E-105 Zeta: Reconstructed
 * Biolizard: Simulated
 * Guard Robo MKII (first half of the final boss batlle)
 * Omega Zemerl (second half of the final boss battle)

Game Modes

 * Story Mode
 * Arcade Mode
 * Trial Mode
 * VS Mode
 * Tutorial
 * Training
 * Game Records
 * Extras
 * Options

Controls

 * L Button - Guard / Defend
 * R Button - Recover, charge
 * Circle Pad - Move around
 * D-Pad
 * Left - Use 1st (set) Special Move
 * Right - Use 2nd (set) Special Move
 * Up - Use (set) Super Special
 * Down - Use (set) Team Special or enter Super Mode
 * A Button - Jump
 * B Button - Attack, combo (up to 3 hits)
 * Y Button - Upper Attack
 * X Button - Heavy Attack (can be used during or after a combo)
 * Start Button - Pause game
 * Select Button - Pause game (not explained on physical manual)

Sonic Battle Overdrive: Deluxe Pack
Sonic Battle Overdrive: Deluxe Pack is a package consisting of a DVD or Blu-ray + DVD (depending on the package bought), 2 soundtracks from both the game and the 3D CGI movie, Sonic Big's Break, and the game itself (respectively). This is also a pre-order bonus.

Other Info

 * Rating: CERO: A (All Ages), ESRB: E or E10+, PEGI: 7
 * Developed by: Sonic Team Japan, Sonic Team USA, THQ.
 * Published by: Sega
 * System(s): Nintendo 3DS

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 (and possibly the official reviewers), it was later changed to Zemerl (with the first letter similar to Dragon Ball Z!).
 * Challenge Mode has been changed to Arcade Mode, with differed mechanics as well.
 * Finale is named after an ability from the "The End" Garment Grid in Final Fantasy X-2.
 * Also, Omega Finale, Omega Zemerl's Super Special, is named after an ability exclusive to Sora's Valor Form in Kingdom Hearts II.