A crew of players experience the tense atmosphere of a WW2 U-boat, manning the stations in this realistic co-op simulation game. Several crews may play together in a wolfpack, completing missions based on iconic events during the different stages of German U-boat warfare. Solo play included.

| Poll | Players |
|---|---|
| 16:52 UTC | 26 |
| 23 Oct, 16:50 UTC | 8 |
Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| October 2026Oct 2026 (so far) | 15 | −1 | −6.4% | 26 |
| September 2026Sept 2026 | 16 | 0 | +1.5% | 84 |
| August 2026Aug 2026 | 16 | +4 | +32.9% | 86 |
| July 2026Jul 2026 | 12 | −2 | −13.2% | 60 |
| June 2026Jun 2026 | 14 | −5 | −26.9% | 43 |
| May 2026May 2026 | 19 | +3 | +20.2% | 70 |
| April 2026Apr 2026 | 16 | +2 | +15.4% | 75 |
| March 2026Mar 2026 | 14 | +1 | +8.2% | 66 |
| February 2026Feb 2026 | 13 | −1 | −8.3% | 49 |
| January 2026Jan 2026 | 14 | +2 | +14.2% | 49 |
| December 2025Dec 2025 | 12 | 0 | +0.2% | 47 |
| November 2025Nov 2025 | 12 | +1 | +11.1% | 52 |
| October 2025Oct 2025 | 11 | −2 | −17.1% | 52 |
| September 2025Sept 2025 | 13 | 0 | −3.2% | 67 |
| August 2025Aug 2025 | 14 | +2 | +17.9% | 50 |
| July 2025Jul 2025 | 12 | +1 | +6% | 53 |
| June 2025Jun 2025 | 11 | −4 | −27.1% | 53 |
| May 2025May 2025 | 15 | −4 | −23.3% | 59 |
| April 2025Apr 2025 | 20 | 0 | −1% | 73 |
| March 2025Mar 2025 | 20 | +3 | +21.1% | 80 |
| February 2025Feb 2025 | 16 | −2 | −11.2% | 86 |
| January 2025Jan 2025 | 18 | +4 | +29.2% | 80 |
| December 2024Dec 2024 | 14 | +1 | +4% | 58 |
| November 2024Nov 2024 | 14 | −2 | −13% | 57 |
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| October 2024Oct 2024 | 16 | −3 | −16.6% | 69 |
| September 2024Sept 2024 | 19 | −4 | −18.1% | 85 |
| August 2024Aug 2024 | 23 | +6 | +37.9% | 100 |
| July 2024Jul 2024 | 17 | 0 | −1.1% | 85 |
| June 2024Jun 2024 | 17 | +2 | +13.5% | 63 |
| May 2024May 2024 | 15 | 0 | −0.3% |
Average and peak concurrent players each month, and the change in average players from the month before. Months before October 2026 are from a licensed historical archive.
| 66 |
| April 2024Apr 2024 | 15 | −2 | −11.9% | 60 |
|---|
| March 2024Mar 2024 | 17 | −8 | −31.3% | 64 |
|---|
| February 2024Feb 2024 | 25 | −12 | −33.3% | 108 |
|---|
| January 2024Jan 2024 | 37 | +5 | +15% | 127 |
|---|
| December 2023Dec 2023 | 32 | +16 | +101.7% | 198 |
|---|
| November 2023Nov 2023 | 16 | 0 | +0.4% | 53 |
|---|
| October 2023Oct 2023 | 16 | +2 | +15.6% | 58 |
|---|
| September 2023Sept 2023 | 14 | −3 | −17.3% | 52 |
|---|
| August 2023Aug 2023 | 17 | −3 | −17.2% | 56 |
|---|
| July 2023Jul 2023 | 20 | +1 | +6.6% | 74 |
|---|
| June 2023Jun 2023 | 19 | +2 | +15% | 63 |
|---|
| May 2023May 2023 | 16 | −2 | −9.5% | 49 |
|---|
| April 2023Apr 2023 | 18 | −3 | −16.4% | 60 |
|---|
| March 2023Mar 2023 | 22 | +2 | +12% | 75 |
|---|
| February 2023Feb 2023 | 19 | +2 | +9.4% | 58 |
|---|
| January 2023Jan 2023 | 18 | +1 | +6.2% | 65 |
|---|
| December 2022Dec 2022 | 17 | −1 | −4.5% | 56 |
|---|
| November 2022Nov 2022 | 17 | −6 | −26.3% | 82 |
|---|
| October 2022Oct 2022 | 24 | +7 | +45.1% | 89 |
|---|
| September 2022Sept 2022 | 16 | −2 | −9.2% | 64 |
|---|
| August 2022Aug 2022 | 18 | −5 | −22.1% | 57 |
|---|
| July 2022Jul 2022 | 23 | +11 | +94.6% | 99 |
|---|
| June 2022Jun 2022 | 12 | −3 | −18.5% | 38 |
|---|
| May 2022May 2022 | 14 | −2 | −11.9% | 55 |
|---|
| April 2022Apr 2022 | 16 | +4 | +34.6% | 54 |
|---|
| March 2022Mar 2022 | 12 | −5 | −30.9% | 59 |
|---|
| February 2022Feb 2022 | 18 | −6 | −26.3% | 66 |
|---|
| January 2022Jan 2022 | 24 | +5 | +24.8% | 85 |
|---|
| December 2021Dec 2021 | 19 | +5 | +31.1% | 73 |
|---|
| November 2021Nov 2021 | 15 | −1 | −9.5% | 57 |
|---|
| October 2021Oct 2021 | 16 | −1 | −6.3% | 53 |
|---|
| September 2021Sept 2021 | 17 | −7 | −27.7% | 48 |
|---|
| August 2021Aug 2021 | 24 | +5 | +27.9% | 91 |
|---|
| July 2021Jul 2021 | 19 | +2 | +12.3% | 64 |
|---|
| June 2021Jun 2021 | 17 | −3 | −16.9% | 65 |
|---|
| May 2021May 2021 | 20 | −6 | −23.9% | 94 |
|---|
| April 2021Apr 2021 | 26 | 0 | +1.4% | 96 |
|---|
| March 2021Mar 2021 | 26 | −1 | −5.2% | 76 |
|---|
| February 2021Feb 2021 | 27 | −4 | −14% | 86 |
|---|
| January 2021Jan 2021 | 32 | +6 | +21.6% | 91 |
|---|
| December 2020Dec 2020 | 26 | −1 | −3.8% | 86 |
|---|
| November 2020Nov 2020 | 27 | +2 | +8.3% | 96 |
|---|
| October 2020Oct 2020 | 25 | +1 | +2% | 80 |
|---|
| September 2020Sept 2020 | 25 | −10 | −30% | 84 |
|---|
| August 2020Aug 2020 | 35 | +5 | +17% | 112 |
|---|
| July 2020Jul 2020 | 30 | +3 | +12% | 110 |
|---|
| June 2020Jun 2020 | 27 | −11 | −28.7% | 88 |
|---|
| May 2020May 2020 | 38 | +1 | +1.4% | 110 |
|---|
| April 2020Apr 2020 | 37 | +6 | +17.9% | 113 |
|---|
| March 2020Mar 2020 | 31 | +9 | +41.3% | 110 |
|---|
| February 2020Feb 2020 | 22 | +1 | +6.6% | 79 |
|---|
| January 2020Jan 2020 | 21 | +4 | +25.3% | 78 |
|---|
| December 2019Dec 2019 | 17 | −3 | −13.4% | 61 |
|---|
| November 2019Nov 2019 | 19 | −4 | −19.1% | 76 |
|---|
| October 2019Oct 2019 | 24 | +4 | +19.1% | 73 |
|---|
| September 2019Sept 2019 | 20 | 0 | +1.6% | 91 |
|---|
| August 2019Aug 2019 | 20 | −4 | −17.2% | 65 |
|---|
| July 2019Jul 2019 | 24 | −5 | −18.8% | 79 |
|---|
| June 2019Jun 2019 | 29 | −35 | −54.9% | 93 |
|---|
| May 2019May 2019 | 65 | −32 | −33.3% | 208 |
|---|
| April 2019Apr 2019 | 97 | −71 | −42.4% | 322 |
|---|
| March 2019Mar 2019 | 169 | — | — | 377 |
|---|