Unfortunately, many companies have strictly copied the obvious game elements, such as badges and leveling-up, without understanding the deeper psychology at work.

不幸的是，许多公司原原本本地抄袭了明显的游戏元素，比如徽章和升级机制，却没有理解在深层发挥效应的心理学因素。

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When roulette was launched it quickly rose to become the top bitZino game, leveling off now to become equal with blackjack in terms of hands played.

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Inafune has been increasingly frustrated with the Japanese game industry for some time now, leveling harsh criticisms at developers, including his own, that have made headlines.

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When the World of Warcraft expansion, Mists of Pandaria came out, Salvatore dipped back into the game again, but the thought of leveling up a new character was simply too daunting.

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