The character, Sonic the Hedgehog, first appeared in...
In the original Sonic the Hedgehog game, there were how many Chaos Emeralds?
Starting from Sonic the Hedgehog 2, Yuji Naka created a transformation for Sonic. What series was his inspiration?
What was Yuji Naka's inspiration for creating Sonic the Hedgehog?
In Sonic Adventure DX: Director's Cut, how many characters were playable, not including Super Sonic in the Final Story?