With Rovio under its wing, Sega says it plans to “accelerate the development” of its own existing games, as well as “generate synergies” between Sega and Rovio’s brands. Specifically, it seems that Rovio’s experience in so-called “live service” mobile gaming is what appealed to Sega, which refers games designed to be played more or less indefinitely through regular content updates to keep players interested. Moreover, Sega said that Rovio’s expertise can help it expand Sega’s current and new games in more markets, particularly in Europe and North America.
https://techcrunch.com/2023/04/17/sega-to-acquire-angry-birds-maker-rovio-for-775m/