I never owned Sonic 1, or 3 or S&K, so I need to play them in order before I get Sonic 4 episodes 1 & 2.
The to be concluded bit makes me sad. I guess this was a one-off then.
I have Sonic 4, episode 1 on Android (not yet installed) but I'd rather play it on a console. At least it'll be portable - maybe I could play it on a bigger screen if the SGS3 or whatever phone I get can use HDMI out to the TV and allows a PS3 controller to be hooked up to it.#
Sonic Rules.