Mario is not a playable character although you can play as him only as a custom character using game maker 8.
you just type :sonic fgx download:
sonic 5
hkskjt5 sonic fgx 2 games is all rig
RFRHYGNH
a+b
NO
Play as sonic shaow and knuckles
Collect all chaos emeralds.
you cant do that
media fire.com
sonic the hedgehog 1,2 and 3. sonic cd knuckles' chaotix
by beating the story of knuckles