What is the point of this topic?
They aren't even in the same league. Sonic Adventure was fun, there's no doubt...but Mario 64 pioneered current 3-D gaming as we know it. It was one of the first full fledged 3-D experiences ever...and is still considered one of the most classic games Nintendo created.
Sonic Adventure is arguably the start of the downfall of the Sonic franchise. It was fun, but it created the trend where Sonic Team added many needless characters, and spin off games that were horribly flawed and glitchy.
Sonic and the Secret Rings was the first game that started righting some of the problems with the franchise since it went 3-D.[/QU there is where you are wrong sonic adv. 2 ruined the franchice