“Make-or-break game” in Japanese
Short answer
Make-or-break game in Japanese is “一発勝負” (ippatsushoubu). Full meaning: contest decided by a single round (bout), contest decided by a single roll of dice, one-shot game (contest), make-or-break game.
Other ways to say “Make-or-break game” in Japanese
一番勝負
ichibanshoubu contest decided by a single round (bout), contest decided by a single roll of dice, one-shot game (contest), make-or-break game
一回勝負
ikkaishoubu contest decided by a single round (bout), contest decided by a single roll of dice, one-shot game (contest), make-or-break game
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