According to a listing for a Sonic Generations strategy guide at Play.com, the game will feature bonus items and locations you can unlock by collecting rings. Could the finished game contain bonus levels we don’t already know about from the leaked demo content, or just extra Acts?? The rings referred to are likely the red special rings you can gather 5 of from every Act. The red rings in Sonic Colours unlocked new content in that game, so they will no doubt do the same thing in Sonic Generations.

The ultimate celebration of 20 years of Sonic gaming. Sonic Generations delivers the definitive gaming experience for Sonic fans new and old. Sonic’s universe is thrown into chaos when a mysterious new power comes into force, creating
“time holes” which take Sonic and his friends back in time. Now they must team up to defeat their enemies, save their friends, and find out who is behind this diabolical deed.

The walkthrough guides you through every level and past each boss

Collect every ring and unlock bonus items and locations

Learn about Sonic and his friends, past and present

If you’re interested in getting yourself the strategy guide, it’s available to pre-order at Play.com for £9.99 and Amazon.co.uk for £11.69.

Source: Play.com