Golden Era

>Sonic 1
>Sonic 2
>Sonic CD (Sonic 2 JP)
>Sonic 3 & Knuckles
>Sonic Adventure
>Sonic Adventure 2

Slop era

>Sonic Heroes
>Shadow the Hedgehog 05
>Sonic 06
>Sonic and the Secret Rings
>Sonic and the Black Knight

Hedgehog Engine Kino Trilogy era

>Sonic Unleashed
>Sonic Colors
>Sonic Generations

Hedgehog Engine Slop era

>Sonic Lost World
>Sonic Forces
>Sonic Frontiers