Some of us don't want a puzzle game that will last the rest of our lives. I want something to get obsessed about for a few weeks, then move on to other things. I'd rather 2048 with its winnability (and beyond - I'm after its 8192 milestone now) than something nigh unto unwinnable.

BTW: I know there's ads on the 2048 iOS app, but don't see them. I'm barely aware of anything when playing.