Guinea Pig: Mermaid in the Manhole

  • 1988
  • Not Rated
  • 58m
movieMx RATING
5.3/1068
VERDICT
AVERAGE
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Performance & Direction: Guinea Pig: Mermaid in the Manhole Review

Last updated: February 6, 2026

movieMx Editorial Team
REVIEWED BY

movieMx Editorial Team

🔍 Cinematic Analysis Expert

Leading cinematic analysis expert with over 10 years of experience in Bollywood and Hollywood box office tracking. Reviewed 500+ films with a focus on narrative structure and commercial profitability.

📅 Updated: February 6, 2026 🎟️ Verified Viewing

🎬 Quick Verdict: Hit or Flop?

Is Guinea Pig: Mermaid in the Manhole (1988) worth watching? According to our cinematic analysis, the film stands as a AVERAGE with a verified audience rating of 5.3/10. Whether you're looking for the box office collection, ending explained, or parents guide, our review covers everything you need to know about this Horror.

🎭 Cast Performances: A Masterclass

The success of any Horror is often anchored by its ensemble, and Guinea Pig: Mermaid in the Manhole features a noteworthy lineup led by Shigeru Saiki . Supported by the likes of Mari Somei and Go Riju , the performances bring a palpable realism to the scripted words.

Performance Analysis: While the cast delivers competent and professional performances, they are occasionally hampered by a script that leans into familiar archetypes.

💡 Final Verdict: Is it Worth Watching?

In summary, our editorial assessment of Guinea Pig: Mermaid in the Manhole (1988) is mixed. With an audience rating of 5.3/10, it stands as a decent one-time watch.
Result: AVERAGE
Based on verified audience sentiment and box office trajectory, Guinea Pig: Mermaid in the Manhole stands as a AVERAGE.

Story & Plot Summary: Guinea Pig: Mermaid in the Manhole

Quick Plot Summary: Guinea Pig: Mermaid in the Manhole is a Horror, Romance film that crafts an atmosphere of dread and suspense, using psychological terror and visual scares. This summary provides a scannable look at the movie's central conflict and narrative structure.

Ending Explained: Guinea Pig: Mermaid in the Manhole

Ending Breakdown: Guinea Pig: Mermaid in the Manhole attempts to tie together its various plot elements. The finale presents its approach to horror resolution.

The conclusion addresses the core thematic questions, offering viewers material for post-viewing discussion.

Ending Analysis:

  • Narrative Resolution: The story concludes by addressing its primary narrative threads, providing closure while maintaining some ambiguity.
  • Character Arcs: Character journeys reach their narrative endpoints, reflecting the film's thematic priorities.
  • Thematic Payoff: The ending reinforces the horror themes established throughout the runtime.

The final moments of Guinea Pig: Mermaid in the Manhole reflect the filmmakers' creative choices, offering an ending that aligns with the film's tone and style.

Who Should Watch Guinea Pig: Mermaid in the Manhole?

Consider Watching If:

  • You're a completist for Horror films
  • You're curious despite mixed reviews
  • You have low expectations and want casual entertainment

Box Office Collection: Guinea Pig: Mermaid in the Manhole

Metric / RegionCollection (Approx)
Production Budget $5.5K
Trade Verdict FINANCIAL DISAPPOINTMENT

Guinea Pig: Mermaid in the Manhole Budget

The estimated production budget for Guinea Pig: Mermaid in the Manhole is $5.5K. This figure covers principal photography, talent acquisitions, and visual effects. When accounting for global marketing and distribution, the break-even point is typically 2x the base production cost.

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Top Cast: Guinea Pig: Mermaid in the Manhole

All Cast & Crew →
Shigeru Saiki
Shigeru SaikiThe Artist
Mari Somei
Mari SomeiThe Mermaid
Go Riju
Go RijuMale Neighbor
Masami Hisamoto
Masami HisamotoFemale Neighbor
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Guinea Pig: Mermaid in the Manhole Parents Guide & Age Rating

1988 Advisory
Not Rated

Official Age Rating

Wondering about Guinea Pig: Mermaid in the Manhole age rating or if it's safe for kids? Here is our cinematic advisory:

Guinea Pig: Mermaid in the Manhole has not been officially rated yet. Based on its genres (Horror, Romance), it contains frightening scenes, intense suspense, romantic content.

⏱️ Runtime & Duration

The total runtime of Guinea Pig: Mermaid in the Manhole is 58 minutes (58m). Ensuring you have enough time for the full cinematic experience.

Verdict Summary

Analyzing the overall audience sentiment, verified rating of 5.3/10, and global performance metrics, Guinea Pig: Mermaid in the Manhole is classified as a AVERAGE. It remains an essential part of the 1988 cinematic calendar.

AVERAGE
Official movieMx status for Guinea Pig: Mermaid in the Manhole. Rating: 5.3/10

Frequently Asked Questions

Is Guinea Pig: Mermaid in the Manhole worth watching?

Guinea Pig: Mermaid in the Manhole is definitely worth watching if you enjoy Horror movies. It has a verified rating of 5.3/10 and stands as a AVERAGE in our box office analysis.

Where can I find Guinea Pig: Mermaid in the Manhole parents guide and age rating?

The official parents guide for Guinea Pig: Mermaid in the Manhole identifies it as Not Rated. Our detailed advisory section above covers all content warnings for families.

What is the total runtime of Guinea Pig: Mermaid in the Manhole?

The total duration of Guinea Pig: Mermaid in the Manhole is 58 minutes, which is approximately 0h 58m long.

Best Movies to Watch if you liked Guinea Pig: Mermaid in the Manhole

How Guinea Pig: Mermaid in the Manhole Compares & Where it Ranks

Critic Reviews for Guinea Pig: Mermaid in the Manhole

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movieMx Verified

This review has been verified for accuracy and editorial quality by our senior cinematic analysts.

This analysis is compiled by our editorial experts using multi-source verification and audience sentiment data for maximum accuracy.

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Expert Consensus
Live Rating
MOVIEMX
★ 5.3
Guinea Pig: Mermaid in the Manhole
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