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Sonic Adventure 2, even though it has the same name, it is actually a remaster for the original Sonic Adventure 2, with updated graphics and the assets from Sonic Adventure 2: Battle.

Sonic Adventure 2: Battle is a DLC for Sonic Adventure 2 (2012). It adds the extra content of the GameCube game Sonic Adventure 2: Battle, such as new playable characters in the Battle mode.

Sonic Adventure DX: Director's Cut, although it has the same name as the GameCube and PC expanded version of the original Dreamcast game, is actually a bundle with both the game released first for Xbox 360 and PlayStation 3 under the title of "Sonic Adventure" and its DLC, "Sonic Adventure DX Upgrade". These two games are enhanced ports of the PC version of the original "Sonic Adventure DX: Director's Cut". This bundle/enhanced port adds full widescreen support for the game.

On your mark, get set...PLAY! Get ready to race in the Sonic Rumble! Jump into a speedy, 32-person mobile royale set in a cheery toy world created by Dr. Eggman. Play as some of your favorite characters from the Sonic the Hedgehog universe complete with customization to create your perfect avatar as you dive into action-packed gameplay.

Shadow the Hedgehog is back with Classic and Modern Sonic in Sonic X Shadow Generations, an all-new collection featuring two unique experiences! Play as Shadow in a brand-new story campaign featuring never-before-seen abilities that prove why he's known as the Ultimate Life Form! Speed through iconic stages from Shadow's history, discover hidden secrets in an expansive hub world, and unlock new powers to take on Black Doom and save the world. Sonic X Shadow Generations also includes a complete remaster of the highly acclaimed Sonic Generations, a time-traveling adventure featuring a greatest-hits collection of 3D and 2D Sonic stages, now with upgraded visuals and new bonus content.

Tails, the genius mechanic and Sonic’s closest friend, is ready to take flight on the course!