1, lack of innovation in the game: over time, the gameplay and content of the game has not been updated, resulting in weakened player interest and serious player turnover.
2. Difficulty in profitability: due to the decay of the game's popularity, the number of players decreases, resulting in profitability becoming difficult.
3. Impact on the company's broader game portfolio: The downgrading of the classic version of Angry Birds was done to take into account the company's broader game portfolio, as well as commercial interests.
4. Issues with in-game purchases and ads: the current version of Angry Birds contains too many in-game purchase options and ads, which may have affected the player experience.