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Nikoli no Puzzle 4: Hitori ni Shitekure
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Nikoli no Puzzle 4: Yajilin
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Nikoli no Puzzle 4: Numberlink
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Nikoli no Puzzle 4: Shikaku ni Kire
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Nikoli no Puzzle 4: Hashi wo Kakero
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Nikoli no Puzzle 4: Masyu
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Nikoli no Puzzle 4: Heyawake
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Nikoli no Puzzle 4: Nurikabe
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Cover missing
Nikoli no Puzzle 4: Slither Link
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Nikoli no Puzzle 4: Kakuro
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Nikoli no Puzzle 4: Sudoku
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Nikoli no Puzzle V: Numberlink