Grab your favorite Sonic character as you battle in one of Doctor Robotnik's flying egg machines. Collect power ups to change your active ability, choose from a huge variety of weapons to smash your opponent. Active music and sound effects straight from the console game. See what happens when you throw the classic sonic line up against Mario! Control your flier with the W-A-S-D keys for first player, or with the arrow keys for second player. Two people can play on the same key board. Find your weapon and smash the enemy for a chance to take on all challengers. Dr Robotnik Duels is one of our many Fighting Games that we publish on TheGamerStop.com. This game is also tagged as a Sonic game. Click the play button to start having fun. To play even more free games, view our popular and new games page. If you want to play more games like this, then you can simply check out the games inside the game tags that are the most relevant to your interests or the Fighting Games category or the games like this game page at the end of the game tags.