近年来，在线视频游戏行业已经过渡到一种免费的业务模式，游戏开发商需要先给玩家免费提供游戏，然后通过游戏内的各种小交易来盈利。

In recent years, the online video game industry has transitioned to a free-to-play business model requiring game makers to give the games away and generate revenue through in-game micro-transactions.

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