---
title: "7Days! Mystery Puzzle Story — App Overview"
url: https://marlvel.ai/apps/7days-mystery-puzzle-story
category: Games
developer: Buff Studio Co.Ltd.
platforms: ios
rating: 4.7 (1.1K ratings)
pricing: freemium
report_level: overview
generated: 2026-04-18
last_verified: "2026-04-18T06:41:13.624Z"
overall_rating: 4.7
total_reviews: 1120
data_age_days: 165
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This is a choice-driven mystery visual novel where player decisions dictate the narrative path and character survival.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Games |
| Rating | 4.7 ★ (1.1K) |
| Pricing | freemium |
| Platforms | iOS |
| Latest Version (iOS) | 2.5.8 |
| Developer | Buff Studio Co.Ltd. |

<!-- SECTION: Summary -->
## What is 7Days! Mystery Puzzle Story?

7Days! Mystery Puzzle Story is a mobile-first, chat-style visual novel that centers on player-driven decision-making. The game features a branching narrative where user choices directly impact character relationships and the ultimate fate of the protagonist and their comrades.

<!-- SECTION: Key Features -->
## Key Features

- **Decision-Based Narrative**: The story branches based on player choices, allowing users to influence the plot and character outcomes.
- **Chat-Style Interface**: The game utilizes a mobile-optimized, chat-based visual novel format to deliver its mystery storyline.
- **Relationship System**: Small choices made throughout the game alter the player's relationships with various comrades.
- **Ad-Free Premium Option**: Users can purchase a paid version to remove advertisements and bypass the ticket-based play system.

<!-- SECTION: Target Audience -->
## Who is it for?

Fans of interactive fiction, mystery games, and narrative-driven visual novels who enjoy high-stakes, choice-based gameplay.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/7days-mystery-puzzle-story/id1455162227?uo=4)
- [Full Intelligence Report](https://marlvel.ai/apps/7days-mystery-puzzle-story)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/7days-mystery-puzzle-story).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*