Viewtiful Joe. The first one, on Gamecube, was amazing. Stupidly hard, too. But still fun. Then there was Joe 2. Equally amazing, with mildly lower difficulty, meaning it was finishable by Young RPGs. Then, there was the DS spinoff, also fun. But they promised me a third game. They gave me a DS spinoffy thing, and a Smash-Bros-Esque thing.
I wanted Viewtiful Joe 3, on a home console, where it belonged. As Captain Blue said, "There's two more times when Earth will be in danger, and each time a hero must stand up to defend it." So where did that ultimate ending go, Capcom? The DS wasn't the right place to conclude Joe, damnit!