looks like $1 iOS games with free newly released content is no more. Now we have to pay for each new set of 10 levels that I can finish in 1 sit. How does Tetri

looks like $1 iOS games with free newly released content is no more. Now we have to pay for each new set of 10 levels that I can finish in 1 sit. How does Tetris' gameplay style warrant new content to justify a 30$ game purchase anyway?