In sonic and knuckles for the xbox can you play 3 with super emeralds all extras?

You're likely thinking of Sonic & Knuckles for the Sega Genesis (also known as the Mega Drive). There's no version of Sonic & Knuckles for the Xbox.

Here's how the "3 with Super Emeralds all extras" works in the Genesis version:

* Sonic the Hedgehog 2: This game has special "lock-on" technology.

* Sonic & Knuckles: This game can be "locked on" to Sonic 2.

* Lock-on Technology: When you lock Sonic & Knuckles onto Sonic 2, it creates a combined game with new features.

* Super Emeralds: In the combined game, you can collect Super Emeralds, which unlock special abilities for Sonic and Knuckles.

* All Extras: Completing the game with all Super Emeralds unlocks additional content, like the Hidden Palace Zone and various bonus modes.

So, while there isn't an Xbox version of Sonic & Knuckles, the Genesis version allows you to play with the Super Emeralds and unlock extras through the lock-on technology.