Which one can I use? Thank you.
1 Thanks for the tickets for next week's game.
2 Thanks for the tickets to next week's game.
Both are used in the USA and mean the same thing.
1 Thanks for the tickets (to be used for) next week's game.
2 Thanks for the tickets (to be used for) next week's game.
'for' has the meaning 'in exchange for, charged as a price for'
Hence, 'for the game' has the sense of 'you pays your money and we give you a game of football in exchange'
'to the game' is stressing 'getting into the grounds, the game venue', allowing entrance to.
HOWEVER - this really is splitting hairs, and people would say either because it really means the same thing, you enter the grounds and you see the game.
Tickets to a Broadway show, tickets for a Broadway show.