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Games like Loppi Puzzle Magazine: Kangaeru Puzzle Soukangou
If you finished Loppi Puzzle Magazine: Kangaeru Puzzle Soukangou, the closest matches are SuperLite 1500 series: Sudoku 3, SuperLite 1500 series: Sudoku, Colorful Logic, Colorful Logic 2 and Colorful Logic 3. All 8 share its puzzle genre and are ranked by how closely their themes and modes overlap.