Lift it's game
I have 2 ways of explaining this
1) Lift = carry
game = competition
Imagine if competition was an object you had to carry on your hand and people said that you "needed" to carry it...implying that it's not easy to do or that it's a heavy load
2) Lift it's game = Level up
when you play a game and you level up, the game becomes harder requiring better skills to pass it.