Mentre la pagina sul sito Sega-Italia dedicata a Sonic Generations non è ancora stata aggiornata, vi sono nuove informazioni sui siti internazionali relativi alle caratteristiche del gioco, che riporto di seguito:

Key Features

Twice the Fun
Play as both Classic Sonic and Modern Sonic in the ultimate Sonic experience. Master the moves of each character as they race through each environment on their own specially designed track.

The Best Bits Just Got Better
Iconic environments from gaming history come to life in beautiful HD for the ultimate Sonic adventure, each revisited, recreated and re-imagined with stunning results.

All New Experience
Play some of your gaming’s most iconic environments in a whole new way with famous Sonic stages presented in stunning new stereoscopic 3D.

Unlock New Adventures
Once you complete each level and ‘free’ Sonic’s captured friends, you’ll get to go back and take on more challenges with them at your side.

Infamous Bosses and Rivals
Take on some of the most notorious characters from Sonic’s past as you fight for ultimate supremacy.

Master Your Moves
Master Classic Sonics famous spin-dash attack and utilise Modern Sonic ‘s ‘Sonic Boost’ as you complete the all new tracks.

Additional Key Features for 3DS

All New Content
With new and exclusive environments for the Nintendo 3DS, including an un-lockable ‘special stage’. Each includes two tracks – one for Classic Sonic and one for Modern Sonic – designed to showcase each Sonics’ unique features.

2 Player Versus mode
Take on your friends and earn valuable status points.

Street Pass

Collect new content and unlock bonus material, increasing variety, interaction and replayability. 

Se da un lato alcune di queste caratteristiche sono puramente "promozionali" (e, in alcuni casi, non rivelano assolutamente nulla di nuovo come nel caso dei "Boss di vecchia data") è interessante notare che:

• Sul 3DS, utilizzando la funzionalità Street Pass (ovvero collegandosi ad altri 3DS ) sarà possibile sbloccare nuovi contenuti
• Sarà possibile giocare in modalità 2 giocatori su 3DS
•  Sarà in full HD e in 3D (ma già lo sapevamo dalla demo)
• Ci saranno contenuti sbloccabili alla fine del gioco, tra cui nuove mosse e amici di Sonic da liberare