[Pxtl]

I can't stand how people bag on Rovio. Their games are intelligent and fun and even a bit educational (educational content stuffed into Angry Birds Space, and Amazing Alex is great for getting kids to solve problems creatively). Yes, they're derivative, but they add a tremendous amount to their predecessors. Angry Birds is a far better game than Crush the Castle, and The Amazing Alex is the first solidly-good implementation of TIM in over a decade and has a ton of interesting ideas that add to the concept.

And they have only the most minimal inclusion of the In-App-Purchase crap. They don't make cash-driven Skinner boxes.

People bag on Rovio because they were the first big smash hit of the mobile world, not for any good reason.