From Wiktionary, the free dictionary
Literally, “to enter the game of (someone)”.
- IPA(key): /ɑ̃.tʁe dɑ̃ l(ə) ʒø də/
entrer dans le jeu de
- (figuratively) to play someone's game, to play along with someone, to go along with someone, to get dragged into someone's game