popularize

翻译：据说，是海归让杀人游戏（Mafia）在国内流行起来的。

According to，is the returnee of overseas popularize the game of Mafia in China.

参考翻译：It's said that returned students from overseas popularized the party game Mafia in China. 或 According to some accounts, it's those who received education abroad that popularized Mafia, a popular party game, in China

动词：意思是“使......受欢迎、让......流行起来”。