Simon's Quest is much more time-consuming and frustration (Carnival Night Act 2's barrel, notwithstanding). As much as I love Sonic 3 & Knuckles, and I do very much so, it's lost its challenge over time. The bosses are way too easy. But the level design and the music are the best in the series. Screw Sonic 2. Sonic 3 is the best of the Genesis games by far.