Here's one. Even though it is more varied and complex than your average Zynga pump-and-dump, at a fundamental level it is still the same kind of get-on-a-treadmill-and-keep-walking sort of game, where the primary form of achievement is watching numbers increase linearly as rewards start getting exponentially farther away. You feel almost as used while playing it as playing farmville, which kills enjoyment. That is, you are acutely aware at all times that the game mechanics are subtly or not-so-subtly designed to keep you recurrently tied to the game. To profit you need to spend a certain amount of time per day doing menial tasks.
Thankfully it is a real MMO, and there are some redeeming social aspects to it, but it has very little to recommend it over, say, World of Warcraft. It's a browser game, so it's more accessible, but it doesn't actually play nicely with mobile since it runs in flash, and you might as well go big or go home.
