HomeCepheus Protocol
Cepheus Protocol
Halcyon Winds · in Early Access since May 15, 2020 · data updated Oct 24, 2026
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
In Early Access since May 15, 2020
Steam figures
| Value | As of | |
|---|---|---|
| Steam reviews | Mostly Positive · 76% positive of 2,997 Steam reviews | Oct 22, 2026 |
| Followers on Steam | 22,073 | Oct 24, 2026 |
| Regular US price | $19.99 | Oct 20, 2026 |
| Twitch peak viewers | 7 | Oct 20, 2026 |
| Top Sellers rank | #874 | Oct 21, 2026 |
| Top Sellers US rank | #768 | Oct 21, 2026 |
New Steam reviews per month
| Month | New positive | New negative |
|---|---|---|
| Nov 2025 | 19 | 13 |
| Dec 2025 | 5 | 8 |
| Jan 2026 | 48 | 32 |
| Feb 2026 | 32 | 18 |
| Mar 2026 | 35 | 16 |
| Apr 2026 | 25 | 14 |
| May 2026 | 14 | 15 |
| Jun 2026 | 24 | 16 |
| Jul 2026 | 28 | 16 |
| Aug 2026 | 40 | 16 |
| Sep 2026 | 13 | 2 |
Sales estimate
| Copies sold on Steam | 93k – 300k | |
|---|---|---|
| Gross revenue on Steam | $950k – $3.2M before refunds, tax and Steam’s cut | |
| Steam reviews by buyers | 2,997 | Oct 22, 2026 |
| Copies per review | 31–97 |
Estimates are based on an aggregation of industry-accepted conversion formulas. How this is estimated
Tag DNA
| Tag | Share of Steam games |
|---|---|
| Diplomacy | 1 in 244 games |
| RTS | 1 in 45 games |
| Zombies | 1 in 35 games |
| Post-apocalyptic | 1 in 29 games |
| Gore | 1 in 22 games |
| Building | 1 in 18 games |
| Sandbox | 1 in 16 games |
| Open World | 1 in 14 games |
Games like Cepheus Protocol
| Game | Developer | Match | Steam reviews |
|---|---|---|---|
| Medieval Kingdom Wars | Reverie World Studios | 73% | Mostly Positive · 2,235 |
| Knights of the Crusades | Reverie World Studios | 76% | Mostly Positive · 167 |
| Kingdom Wars 4 | Reverie World Studios | 75% | Mixed · 175 |
| Manor Lords | Slavic Magic | 69% | Very Positive · 77,844 |
| Renaissance Kingdom Wars | Reverie World Studios | 70% | Mostly Positive · 141 |
| 春秋 | weiqian | 72% | Mixed · 381 |
| After Long Night | 疯狗工作室 | 69% | Mostly Positive · 380 |
| Post-Apo Builder | Septarian Games | 69% | Mostly Negative · 54 |