No more games, I'mma change what you call rage
Tear this motherfuckin' roof off like two dogs caged

from Eminem – Lose Yourself Lyrics on Rap Genius

Meaning

The second time he battles, it’s all on the line. So when Jimmy “B-Rabbit” Smith, battles against the member of “Leaders of the Free World,” the intensity is higher than ever.

‘No more games’ also refers to the fact the song is no longer about Eminem’s character B-Rabbit, but he is talking honestly about himself.

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