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Sphenoid Sphenoid is a first-person horror escape game set in a dark, oppressive prison. Explore, uncover clues, solve challenging puzzles, and survive the terrifying secrets that lurk around every corner.
Positive Now
82%35 reviews on Steam
30-Day Trend
—Not enough history yet (since 21 Oct 2026)
Last 12 Months
81%positive, 36 reviews
Reviews Last Month
1September 2026, −80% on the 7-month average
Reviews By MonthPositive and negative reviews each month, September 2025 to September 2026
| Month |
|---|
| Positive |
|---|
| Negative |
|---|
| Share positive |
|---|
| September 2026 | 0 | 1 | 0% |
| July 2026 | 1 | 0 | 100% |
| March 2026 | 0 | 1 | 0% |
| January 2026 | 2 | 0 | 100% |
| December 2025 | 2 | 0 | 100% |
| November 2025 | 1 | 0 | 100% |
| October 2025 | 5 | 1 | 83% |
| September 2025 | 18 | 4 | 82% |
Steam’s own monthly review graph, read each month. How we count
Review SentimentToo few recent reviews to call a trend3 in the last three finished months
| Month | Last 3 months | That month | Reviews | All so far |
|---|---|---|---|---|
| September 2026 | — | — | 1 | 81% |
| July 2026 | — | — | 1 | 83% |
| March 2026 | — | — | 1 | 82% |
| January 2026 | — | — | 2 | 85% |
| December 2025 | — | — | 2 | 84% |
| November 2025 | 83% | — | 1 | 83% |
| October 2025 | 82% | — | 6 | 82% |
| September 2025 | 82% | 82% | 22 | 82% |
Review ScoreSteady at 82% positive since 21 Oct 202635 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 | September 2025 | 22 | 82% |
Best and worst counts months with at least 50 reviews.
