By Spencer . January 3, 2011 . 12:57am
Sonic isn’t the only franchise celebrating its 20th birthday. Blob stacking puzzle game Puyo Puyo turns 20 too.
Sega has unspecified plans to celebrate both titles. Meanwhile, Alex Kidd who turned 20 a few years ago is restricted to cameos in games like Segagaga and Hyperdimension Neptunia.