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マーダーミステリーパラドクス このひと夏の十五年 "Murder Mystery Paradox: Fifteen Years of Summer" is a text-based adventure game. Enter the remote and sparsely populated island of Shikinejima and attempt to solve the strangely recurring mystery found there.
Positive Now
84%257 reviews on Steam
30-Day Trend
—Not enough history yet (since 21 Oct 2026)
Last 12 Months
83%−2 pts on 85% since launch
Reviews Last Month
4September 2026, −11% on the 12-month average
Reviews And Players By Month| Month | Positive | Negative | Average players |
|---|---|---|---|
| October 2026 | 4 | 1 | 3 |
| September 2026 | 3 | 1 | — |
| August 2026 | 6 | 2 | 5 |
| July 2026 | 2 | 0 | — |
| May 2026 | 3 | 1 | — |
| April 2026 | 0 | 0 | — |
| March 2026 | 3 | 0 | — |
| February 2026 | 5 | 1 | — |
| January 2026 | 5 | 2 | 4 |
| December 2025 | 5 | 0 | 3 |
| November 2025 | 5 | 0 | — |
| October 2025 | 3 | 1 | 3 |
| September 2025 | 3 | 1 | 4 |
| August 2025 | 5 | 1 | 6 |
| July 2025 | 6 | 2 | 10 |
| June 2025 | 5 | 1 | 4 |
| May 2025 | 9 | 0 | 3 |
| April 2025 | 7 | 0 | 5 |
| March 2025 | 4 | 1 | 5 |
| February 2025 | 0 | 1 | 3 |
| January 2025 | 4 | 0 | 5 |
| December 2024 | 4 | 1 | 3 |
| November 2024 | 1 | 0 | 2 |
| October 2024 | 4 | 0 | 4 |
| September 2024 | 3 | 2 | 7 |
| August 2024 | 2 | 0 | 5 |
| July 2024 | 8 | 2 | 9 |
| June 2024 | 6 | 2 | 10 |
| May 2024 | 3 | 2 | 7 |
| April 2024 | 10 | 0 | 12 |
| March 2024 | 13 | 2 | 9 |
| February 2024 | 6 | 2 | 8 |
| January 2024 | 11 | 3 | 10 |
| December 2023 | 65 | 8 | 27 |
Review SentimentToo few recent reviews to call a trend14 in the last three finished months
Review ScoreSteady at 84% positive since 22 Oct 2026257 reviews when we first checked
Steam’s review score each time our store check saw it change, since 21 Oct 2026. How we count
Notable Months| Notable | Month | Reviews | Positive |
|---|---|---|---|
| Busiest month | December 2023 | 73 | 89% |
Best and worst counts months with at least 50 reviews.
| Month | Last 3 months | That month | Reviews | All so far |
|---|---|---|---|---|
| October 2026 | — | — | 5 | 85% |
| September 2026 | — | — | 4 | 85% |
| August 2026 | — | — | 8 | 85% |
| July 2026 | — | — | 2 | 85% |
| May 2026 | — | — | 4 | 85% |
| April 2026 | — | — | 0 | 85% |
| March 2026 | — | — | 3 | 85% |
| February 2026 | — | — | 6 | 85% |
| January 2026 | — | — | 7 | 85% |
| December 2025 | — | — | 5 | 86% |
| November 2025 | — | — | 5 | 85% |
| October 2025 | — | — | 4 | 85% |
| September 2025 | — | — | 4 | 85% |
| August 2025 | 80% | — | 6 | 85% |
| July 2025 | 87% | — | 8 | 86% |
| June 2025 | 95% | — | 6 | 86% |
| May 2025 | 95% | — | 9 | 86% |
| April 2025 | — | — | 7 | 85% |
| March 2025 | — | — | 5 | 85% |
| February 2025 | — | — | 1 | 85% |
| January 2025 | — | — | 4 | 85% |
| December 2024 | — | — | 5 | 85% |
| November 2024 | — | — | 1 | 85% |
| October 2024 | — | — | 4 | 85% |
| September 2024 | — | — | 5 | 85% |
| August 2024 | 80% | — | 2 | 86% |
| July 2024 | 74% | — | 10 | 85% |
| June 2024 | 83% | — | 8 | 86% |
| May 2024 | 87% | — | 5 | 86% |
| April 2024 | 88% | — | 10 | 88% |
| March 2024 | 81% | — | 15 | 86% |
| February 2024 | 86% | — | 8 | 86% |
| January 2024 | 87% | — | 14 | 87% |
| December 2023 | 89% | 89% | 73 | 89% |
