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Cepheus Protocol Early Access Cepheus Protocol is an Open World RTS Military Survival Game. Play as the CERC hunting Patient 0, maintain Quarantine camps, fight dangerous mutations & Rogue Civilian Combatants . There’s nobody else coming, it’s up to you now.
Positive Now
76%3,002 reviews on Steam
30-Day Trend
—Not enough history yet (since 21 Oct 2026)
Last 12 Months
63%−13 pts on 76% since launch
Reviews Last Month
15September 2026, −64% on the 12-month average
Reviews And Players By Month| Month | Positive | Negative | Average players |
|---|---|---|---|
| October 2026 | 14 | 5 | 66 |
| September 2026 | 13 | 2 | 44 |
| August 2026 | 40 | 16 | 95 |
| July 2026 | 28 | 16 | 61 |
| June 2026 | 24 | 16 | 76 |
| May 2026 | 14 | 15 | 42 |
| April 2026 | 25 | 14 | 36 |
| March 2026 | 35 | 16 | 55 |
| February 2026 | 32 | 18 | 67 |
| January 2026 | 48 | 32 | 73 |
| December 2025 | 5 | 8 | 16 |
| November 2025 | 19 | 13 | 25 |
| October 2025 | 20 | 19 | 30 |
| September 2025 | 18 | 10 | 23 |
| August 2025 | 21 | 12 | 34 |
| July 2025 | 34 | 20 | 23 |
| June 2025 | 19 | 7 | 21 |
| May 2025 | 21 | 7 | 22 |
| April 2025 | 24 | 8 | 22 |
| March 2025 | 11 |
Review ScoreSteady at 76% positive since 21 Oct 20263,002 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 | October 2021 | 142 | 85% |
| Most positive | April 2021 | 71 | 93% |
| Least positive | January 2026 | 80 | 60% |
Best and worst counts months with at least 50 reviews.
| 2 |
| 21 |
| February 2025 | 13 | 3 | 19 |
|---|
| January 2025 | 23 | 11 | 26 |
|---|
| December 2024 | 27 | 12 | 31 |
|---|
| November 2024 | 16 | 4 | 26 |
|---|
| October 2024 | 21 | 7 | 24 |
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| September 2024 | 21 | 7 | 27 |
|---|
| August 2024 | 40 | 11 | 39 |
|---|
| July 2024 | 25 | 8 | 32 |
|---|
| June 2024 | 20 | 6 | 31 |
|---|
| May 2024 | 19 | 8 | 23 |
|---|
| April 2024 | 39 | 16 | 39 |
|---|
| March 2024 | 33 | 10 | 40 |
|---|
| February 2024 | 44 | 13 | 34 |
|---|
| January 2024 | 42 | 12 | 41 |
|---|
| December 2023 | 37 | 10 | 33 |
|---|
| November 2023 | 25 | 7 | 29 |
|---|
| October 2023 | 22 | 6 | 23 |
|---|
| September 2023 | 11 | 5 | 20 |
|---|
| August 2023 | 27 | 12 | 27 |
|---|
| July 2023 | 70 | 24 | 54 |
|---|
| June 2023 | 41 | 7 | 46 |
|---|
| May 2023 | 21 | 10 | 24 |
|---|
| April 2023 | 19 | 7 | 23 |
|---|
| March 2023 | 17 | 6 | 22 |
|---|
| February 2023 | 22 | 5 | 27 |
|---|
| January 2023 | 28 | 7 | 36 |
|---|
| December 2022 | 33 | 11 | 39 |
|---|
| November 2022 | 19 | 16 | 32 |
|---|
| October 2022 | 26 | 13 | 27 |
|---|
| September 2022 | 23 | 4 | 20 |
|---|
| August 2022 | 40 | 12 | 29 |
|---|
| July 2022 | 32 | 11 | 35 |
|---|
| June 2022 | 39 | 17 | 52 |
|---|
| May 2022 | 49 | 16 | 36 |
|---|
| April 2022 | 24 | 7 | 22 |
|---|
| March 2022 | 30 | 13 | 33 |
|---|
| February 2022 | 28 | 7 | 26 |
|---|
| January 2022 | 37 | 14 | 30 |
|---|
| December 2021 | 57 | 10 | 45 |
|---|
| November 2021 | 70 | 11 | 66 |
|---|
| October 2021 | 121 | 21 | 121 |
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| September 2021 | 35 | 3 | 43 |
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| August 2021 | 30 | 5 | 47 |
|---|
| July 2021 | 50 | 10 | 27 |
|---|
| June 2021 | 54 | 7 | 29 |
|---|
| May 2021 | 73 | 10 | 50 |
|---|
| April 2021 | 66 | 5 | 50 |
|---|
| March 2021 | 23 | 2 | 14 |
|---|
| February 2021 | 17 | 4 | 15 |
|---|
| January 2021 | 12 | 1 | 8 |
|---|
| December 2020 | 13 | 1 | 7 |
|---|
| November 2020 | 26 | 1 | 8 |
|---|
| October 2020 | 18 | 1 | 8 |
|---|
| September 2020 | 43 | 3 | 15 |
|---|
| August 2020 | 47 | 6 | 19 |
|---|
| July 2020 | 28 | 1 | 8 |
|---|
| June 2020 | 36 | 7 | 14 |
|---|
| May 2020 | 21 | 1 | 10 |
|---|
