| Country | Title | Year | Avg. (nb) | ||
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| Japan | Father | 父 | 1988 | 2 (1 Reviews) | |
| Cyber Ninja | Mirai Ninja | 1988 | 2 (1 Reviews) | ||
| Guinea Pig 4: Mermaid in a Manhole | Za ginipiggu 4: Manhoru no naka no ningyo | 1988 | 1.96 (6 Reviews) | ||
| Esclaves de la Souffrance | Hako no naka no onna II | 1988 | 1.5 (1 Reviews) | ||
| Survey Map of a Paradise Lost | Hard focus: nusumi-giki | 1988 | 1.5 (1 Reviews) | ||
| Anego | Anego | 1988 | 1.5 (1 Reviews) | ||
| Subway Serial Rape: Lover Hunting | Chikatetsu renzoku reipu : Aijin-gari | 1988 | 1.25 (1 Reviews) | ||
| Those Swell Yakuza | Yakuza tosei no sutekina menmen | 1988 | 1 (1 Reviews) | ||
| Guinea Pig 5: Android of Notre Dame | Za ginipiggu 5: Notorudamu no andoroido | 1988 | 0.92 (3 Reviews) | ||
| Crane | Tsuru | 1988 | 0.75 (1 Reviews) | ||
| Tora-san 40 : Salad-Day Memorial | Otoko wa tsurai yo: Torajiro sarada kinenbi | 1988 | |||
| See You | Umi e, See You | 1988 | |||
| Pervert Ward – Torturing the White Uniform | 1988 | ||||
| Bed Partner | ベッド・パートナー | 1988 | |||
| Celluloid Nightmares | 1988 | ||||
| The Yen Family | Kimurake no hitobito | 1988 | |||
| The Discarnates | 1988 | ||||
| Hope and Pain | Dauntaun hirozu | 1988 | |||
| Star Virgin | 1988 | ||||
| Mother | 1988 | ||||
