Ultimate Robotnik Duels

Ultimate Robotnik Duels is a fangame in the Sonic the Hedgehog Series released on Newgrounds on 12th January 2006.
==Playable Characters==
*Sonic
*Robotnik
*Knuckles
*Tails
*"Silver" Sonic
*"Mecha" Sonic
*Amy
*Shadow
*Rouge
*Vector
*Mario
*Raiden
*M.S. Alien
*Cannon Head
==Stages==
*Space Deck
*Emerald Hill Zone
*Spring Yard Zone
*Labyrinth Zone
*Sunset Shore
*Laser Station
*Marble Zone
Category:Games
Category:Sonic the Hedgehog Games
Category:Browser Games
Category:Fan Games
Category:Fighting Games
Category:2006 Games