Yes, which is the first thing anyone will say positive about that game.
I still enjoyed those emerald stages, how colorful the game was and those sprites.
The mechanic was interesting, but not well executed. The zones didn't helped that much because they were here and there, as they being 5 acts each.
If this ever gets a Remake treatment, they should include Sonic and Tails as unlockables. As changing the random of the zone select, at the very least making it slower or something.