also: ゲームクリアー
noun
completing a game; beating a game
Wasei-eigo from English 'game clear'; used in video game contexts to mean finishing the main story or all objectives.
wasei-eigo (Japanese-coined English), from game clear
このRPGはゲームクリアまでに50時間かかる。
This RPG takes 50 hours to beat.
ゲームクリアの達成
The sense of accomplishment from beating the game is amazing.