noun
impossibly hard video game
Slang used by gamers to describe a game that feels unfairly or unreasonably difficult, often due to poor design or extreme challenge.
このボスは無理ゲーだ。何度やっても勝てない。
This boss is impossibly hard. No matter how many times I try, I can't win.
あのゲームは最初から無理ゲーだった。
That game was impossibly hard from the start.
Abbreviation of 無理なゲーム (muri na gēmu, 'impossible game'). The ゲー part is a common slang shortening of ゲーム.