
As of
30-day average
3 players10 of 30 days observed
| Data | Collected | Observed since | Last success |
|---|---|---|---|
| News and patch notes | Every 7 days (cool tier) | 21 Oct 2026 | |
| Player counts | Every day (cool tier) | 20 Oct 2026 | |
| Store details | Weekly, and when Steam reports a change | 19 Oct 2026 |
Busier games are polled more often. Source: Steam Web API. Not affiliated with Valve.
"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.

Price now
$19.99Usual price
Lowest we've seen
$19.9922 Oct 2026
Sales we've seen
None yetNone since 21 Oct 2026
US Steam store prices, saved each time our store check sees a change. Our records start on 21 Oct 2026, so earlier sales are not listed. A sale is dated from the first check that saw it (usually within an hour of Steam changing the price) to the end date Steam gave. How we count
| Month | Peak | Average | Polls |
|---|---|---|---|
| October 2026 | 7 | 3 | 10 |
| August 2026 | 20 | 5 | Archive |
| June 2026 | 13 | 3 | Archive |
| January 2026 | 14 | 4 | Archive |
| December 2025 | 13 | 3 | Archive |
| October 2025 | 16 | 3 | Archive |
| September 2025 | 16 | 4 | Archive |
| August 2025 | 22 | 6 | Archive |
| July 2025 | 37 | 10 | Archive |
| June 2025 | 19 | 4 | Archive |
| May 2025 | 14 | 3 | Archive |
| April 2025 | 18 | 5 | Archive |
| March 2025 | 16 | 5 | Archive |
| February 2025 | 10 | 3 | Archive |
| January 2025 | 15 | 5 | Archive |
| December 2024 | 13 | 3 | Archive |
| November 2024 | 11 | 2 | Archive |
| October 2024 | 18 | 4 | Archive |
| September 2024 | 28 | 7 | Archive |
| August 2024 | 17 | 5 | Archive |
| July 2024 | 29 | 9 | Archive |
| June 2024 | 37 | 10 | Archive |
| May 2024 | 30 | 7 | Archive |
| April 2024 | 47 | 12 | Archive |
| March 2024 | 38 | 9 | Archive |
| February 2024 | 40 | 8 | Archive |
| January 2024 | 31 | 10 | Archive |
| December 2023 | 201 | 27 | Archive |