Here's a list of the four Tekken 8 pre-order versions you can choose from, as well as bonuses and content included in each package.
Tekken 8 pre-order guide: Editions, prices, platforms, and more explored
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Tekken 8 ultimate and deluxe editions revealed
Tekken 8 pre-order guide: Editions, prices, platforms, and more explored
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Tekken 8 pre-order guide: Editions, pre-order bonuses
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Tekken 8 Pre-Order Guide, All Edition's Bonuses Explained