1991-1997 is Classic era
1998-2005 is Dreamcast/Adventure era
2006-now is Modern era
It's not that black and white. 06, while technically a modern game (and even then the only reason it is is because it's on the same console generation as the others), is more characteristic of a Dreamcast Era game in terms of gameplay.
Originally Posted by ShadowLegend
Whoa man........M&Ms totally MAKE the trail mix. Without it, what do you have? A buncha **** that nobody wants; it's like an Xbox E3 Press Conference.