Angry Birds 2 is out and more than 10 million people are furiously flinging feathered flyers at snorting pigs.
But while it’s free to download, some players are complaining about how the game encourages in-app purchases.
One review praised the “gorgeous” game, but calls the way it prompts users to pay for upgraded content “relentless and wearying”.
The makers, Rovio, says those who don’t buy add-ons still get a “fully-formed game” for free.
The game allows you to gain extra lives in exchange for “gems” – there are several ways to gather these gems in game, but buying them is the easiest.
Image caption There have been loads of Angry Birds spin-off games
If you don’t want to part with your money you’re forced to wait for your lives to replenish, says reviewer Erik Kain.
He thinks this feature will just encourage gamers to stop playing.
“Greedy isn’t the word, but there are words to describe this sort of thing: Foolish, baffling, bone-headed.”
The first Angry Birds game – which was released in 2009 – was a massive hit, even though players had to pay to download it.
There have been other spin-offs in the series, but Angry Birds 2 has been billed as a proper follow-up.
“I played the original endlessly and I was looking forward to the sequel,” fan Jon Norris tells Newsbeat.
