It's been fifteen years since Sega's world-famous mascot arrived in a blur of blue. Fifteen years of sequels, new characters, spin-offs and reinterpretations that have added more to Sonic's world yet also watered down the appeal of the simple high-speed concept. Well that's all history now - new Sonic The Hedgehog is dumping all the unnecessary innovations and taking the series back to Year Zero. There are no gimmicky team options here or bizarre explorations, just Sonic. Running fast.