In Yu-Gi-Oh! GX Tag Force 2what is a "tier"?

Question

been trying to get more cards for the game but ive read u need to complete tiers but i dont no what one is

Answer 1

I'm not exactly sure but I think a tier is some what like levels you have to beat certain people to unlock more packs. It's just a guess from past yugioh games.

Answer 2

Omg, I Just Asked If That Is A Good Game On Psp.

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