Refcat/Sudoku Killer / 杀手数独/ScreenshotsUI reference · gameGameplayGameplay · Screenshots · Sudoku Killer / 杀手数独Added to Refcat Oct 17, 2026PatternsCasualIndieStrategyPuzzleDifficultMinimalistAbstractStylizedRelaxingComponentslistExplore real product flowsScreenshotsExplore the full catalog