The Game Census
Zombie Panic! Source cover art

Zombie Panic! Source

Zombie Panic! Team · 2008-10-03

Steam

ActionAdventureCasualIndieFree To Play

Modes: Multiplayer, Co-operative · Perspectives: First person

Releases: Oct 03, 2008 (PC (Microsoft Windows)), Dec 28, 2007 (Linux)

Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.

Zombie Panic! Source is an Action Adventure Casual Indie game released in 2008, priced at free-to-play, with an owner estimate of 500,000 .. 1,000,000 and a review sentiment of Very Positive (85% of 7856 reviews).

15
playing now
85%
positive of 7.9k reviews
Very Positive
steam's rating (official)
500,000–1,000,000
owners (SteamSpy est.)
61/100
IGDB user rating (5 ratings)
silver
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
Free
steam price (US)

15 players in-game as of 2026-10-15 03:00 UTC (census sample)

Zombie Panic! Source is a cooperative survival-horror Half-Life 2 first-person shooter modification. It is the sequel to the Half-Life mod Zombie Panic. Set in the middle of a zombie apocalypse, players start as a small group of survivors attempting to stay alive. Each map will have its own objectives to complete and win the round or survive by a period of time.

Trailer

Zombie Panic! Source trailer thumbnail

Zombie Panic! Source Trailer (2012)

≈360,708 YouTube results for this game's trailer search

Health check

Quietly active
  • · 15 players in-game at the last census sample.
  • · 123 reviews in the last 8 weeks (~15/week).
  • · Review velocity down 15% vs the prior 8 weeks.
  • · Top 5% of 27,908 Action games in the census by review count.

Health tier since 2026-08-27

Review momentum

PositiveNegative
10810820182026Week of 2018-01-01: 108 positiveWeek of 2018-01-01: 53 negativeWeek of 2018-02-01: 82 positiveWeek of 2018-02-01: 44 negativeWeek of 2018-03-01: 67 positiveWeek of 2018-03-01: 22 negativeWeek of 2018-04-01: 55 positiveWeek of 2018-04-01: 28 negativeWeek of 2018-05-01: 67 positiveWeek of 2018-05-01: 37 negativeWeek of 2018-06-01: 58 positiveWeek of 2018-06-01: 39 negativeWeek of 2018-07-01: 70 positiveWeek of 2018-07-01: 28 negativeWeek of 2018-08-01: 49 positiveWeek of 2018-08-01: 25 negativeWeek of 2018-09-01: 46 positiveWeek of 2018-09-01: 21 negativeWeek of 2018-10-01: 27 positiveWeek of 2018-10-01: 9 negativeWeek of 2018-11-01: 49 positiveWeek of 2018-11-01: 7 negativeWeek of 2018-12-01: 31 positiveWeek of 2018-12-01: 12 negativeWeek of 2019-01-01: 32 positiveWeek of 2019-01-01: 6 negativeWeek of 2019-02-01: 33 positiveWeek of 2019-02-01: 7 negativeWeek of 2019-03-01: 23 positiveWeek of 2019-03-01: 6 negativeWeek of 2019-04-01: 30 positiveWeek of 2019-04-01: 12 negativeWeek of 2019-05-01: 30 positiveWeek of 2019-05-01: 7 negativeWeek of 2019-06-01: 46 positiveWeek of 2019-06-01: 18 negativeWeek of 2019-07-01: 49 positiveWeek of 2019-07-01: 6 negativeWeek of 2019-08-01: 33 positiveWeek of 2019-08-01: 13 negativeWeek of 2019-09-01: 22 positiveWeek of 2019-09-01: 5 negativeWeek of 2019-10-01: 27 positiveWeek of 2019-10-01: 7 negativeWeek of 2019-11-01: 64 positiveWeek of 2019-11-01: 3 negativeWeek of 2019-12-01: 42 positiveWeek of 2019-12-01: 7 negativeWeek of 2020-01-01: 39 positiveWeek of 2020-01-01: 8 negativeWeek of 2020-02-01: 27 positiveWeek of 2020-02-01: 7 negativeWeek of 2020-03-01: 44 positiveWeek of 2020-03-01: 8 negativeWeek of 2020-04-01: 48 positiveWeek of 2020-04-01: 13 negativeWeek of 2020-05-01: 42 positiveWeek of 2020-05-01: 7 negativeWeek of 2020-06-01: 32 positiveWeek of 2020-06-01: 9 negativeWeek of 2020-07-01: 41 positiveWeek of 2020-07-01: 12 negativeWeek of 2020-08-01: 29 positiveWeek of 2020-08-01: 6 negativeWeek of 2020-09-01: 28 positiveWeek of 2020-09-01: 3 negativeWeek of 2020-10-01: 60 positiveWeek of 2020-10-01: 5 negativeWeek of 2020-11-01: 47 positiveWeek of 2020-11-01: 6 negativeWeek of 2020-12-01: 36 positiveWeek of 2020-12-01: 8 negativeWeek of 2021-01-01: 39 positiveWeek of 2021-01-01: 4 negativeWeek of 2021-02-01: 28 positiveWeek of 2021-02-01: 5 negativeWeek of 2021-03-01: 25 positiveWeek of 2021-03-01: 7 negativeWeek of 2021-04-01: 23 positiveWeek of 2021-04-01: 10 negativeWeek of 2021-05-01: 24 positiveWeek of 2021-05-01: 7 negativeWeek of 2021-06-01: 19 positiveWeek of 2021-06-01: 10 negativeWeek of 2021-07-01: 24 positiveWeek of 2021-07-01: 14 negativeWeek of 2021-08-01: 35 positiveWeek of 2021-08-01: 13 negativeWeek of 2021-09-01: 25 positiveWeek of 2021-09-01: 6 negativeWeek of 2021-10-01: 28 positiveWeek of 2021-10-01: 6 negativeWeek of 2021-11-01: 22 positiveWeek of 2021-11-01: 7 negativeWeek of 2021-12-01: 23 positiveWeek of 2021-12-01: 6 negativeWeek of 2022-01-01: 30 positiveWeek of 2022-01-01: 9 negativeWeek of 2022-02-01: 36 positiveWeek of 2022-02-01: 7 negativeWeek of 2022-03-01: 28 positiveWeek of 2022-03-01: 4 negativeWeek of 2022-04-01: 20 positiveWeek of 2022-04-01: 4 negativeWeek of 2022-05-01: 12 positiveWeek of 2022-05-01: 9 negativeWeek of 2022-06-01: 24 positiveWeek of 2022-06-01: 3 negativeWeek of 2022-07-01: 23 positiveWeek of 2022-07-01: 3 negativeWeek of 2022-08-01: 22 positiveWeek of 2022-08-01: 9 negativeWeek of 2022-09-01: 20 positiveWeek of 2022-09-01: 4 negativeWeek of 2022-10-01: 22 positiveWeek of 2022-10-01: 6 negativeWeek of 2022-11-01: 23 positiveWeek of 2022-11-01: 4 negativeWeek of 2022-12-01: 26 positiveWeek of 2022-12-01: 2 negativeWeek of 2023-01-01: 35 positiveWeek of 2023-01-01: 5 negativeWeek of 2023-02-01: 17 positiveWeek of 2023-02-01: 4 negativeWeek of 2023-03-01: 19 positiveWeek of 2023-03-01: 5 negativeWeek of 2023-04-01: 15 positiveWeek of 2023-04-01: 2 negativeWeek of 2023-05-01: 14 positiveWeek of 2023-05-01: 6 negativeWeek of 2023-06-01: 16 positiveWeek of 2023-06-01: 9 negativeWeek of 2023-07-01: 18 positiveWeek of 2023-07-01: 6 negativeWeek of 2023-08-01: 18 positiveWeek of 2023-08-01: 12 negativeWeek of 2023-09-01: 10 positiveWeek of 2023-09-01: 6 negativeWeek of 2023-10-01: 20 positiveWeek of 2023-10-01: 8 negativeWeek of 2023-11-01: 28 positiveWeek of 2023-11-01: 7 negativeWeek of 2023-12-01: 24 positiveWeek of 2023-12-01: 4 negativeWeek of 2024-01-01: 23 positiveWeek of 2024-01-01: 5 negativeWeek of 2024-02-01: 20 positiveWeek of 2024-02-01: 7 negativeWeek of 2024-03-01: 20 positiveWeek of 2024-03-01: 2 negativeWeek of 2024-04-01: 28 positiveWeek of 2024-04-01: 7 negativeWeek of 2024-05-01: 16 positiveWeek of 2024-05-01: 2 negativeWeek of 2024-06-01: 18 positiveWeek of 2024-06-01: 9 negativeWeek of 2024-07-01: 17 positiveWeek of 2024-07-01: 5 negativeWeek of 2024-08-01: 19 positiveWeek of 2024-08-01: 9 negativeWeek of 2024-09-01: 16 positiveWeek of 2024-09-01: 5 negativeWeek of 2024-10-01: 15 positiveWeek of 2024-10-01: 5 negativeWeek of 2024-11-01: 18 positiveWeek of 2024-11-01: 2 negativeWeek of 2024-12-01: 17 positiveWeek of 2024-12-01: 3 negativeWeek of 2025-01-01: 9 positiveWeek of 2025-01-01: 6 negativeWeek of 2025-02-01: 10 positiveWeek of 2025-02-01: 2 negativeWeek of 2025-03-01: 14 positiveWeek of 2025-03-01: 1 negativeWeek of 2025-04-01: 12 positiveWeek of 2025-04-01: 2 negativeWeek of 2025-05-01: 10 positiveWeek of 2025-05-01: 1 negativeWeek of 2025-06-01: 21 positiveWeek of 2025-06-01: 5 negativeWeek of 2025-07-01: 15 positiveWeek of 2025-07-01: 2 negativeWeek of 2025-08-01: 17 positiveWeek of 2025-08-01: 3 negativeWeek of 2025-09-01: 7 positiveWeek of 2025-09-01: 2 negativeWeek of 2025-10-01: 13 positiveWeek of 2025-10-01: 4 negativeWeek of 2025-11-01: 28 positiveWeek of 2025-11-01: 2 negativeWeek of 2025-12-01: 23 positiveWeek of 2025-12-01: 3 negativeWeek of 2026-01-01: 9 positiveWeek of 2026-01-01: 2 negativeWeek of 2026-02-01: 11 positiveWeek of 2026-02-01: 3 negativeWeek of 2026-03-01: 15 positiveWeek of 2026-03-01: 4 negativeWeek of 2026-04-01: 15 positiveWeek of 2026-04-01: 4 negativeWeek of 2026-05-01: 7 positiveWeek of 2026-05-01: 7 negativeWeek of 2026-06-01: 13 positiveWeek of 2026-07-01: 7 positiveWeek of 2026-08-01: 3 positiveWeek of 2026-08-01: 2 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

3082026-09-15 12:00 — 22 players2026-09-16 21:00 — 29 players2026-09-18 04:00 — 29 players2026-09-19 12:00 — 17 players2026-09-20 19:00 — 17 players2026-09-22 03:00 — 13 players2026-09-23 10:00 — 10 players2026-09-24 18:00 — 13 players2026-09-26 01:00 — 9 players2026-09-27 09:00 — 19 players2026-09-28 16:00 — 18 players2026-09-30 00:00 — 13 players2026-10-01 07:00 — 10 players2026-10-02 15:00 — 19 players2026-10-03 23:00 — 12 players2026-10-05 07:00 — 15 players2026-10-06 14:00 — 13 players2026-10-07 22:00 — 21 players2026-10-09 05:00 — 15 players2026-10-10 13:00 — 11 players2026-10-11 20:00 — 17 players2026-10-13 04:00 — 25 players2026-10-14 11:00 — 10 players2026-10-15 03:00 — 15 players
Concurrent players, hourly average, last 30 days (census samples).
47317Jul 2012Aug 2026Jul 2012 — avg 473 · peak 748Dec 2012 — avg 249 · peak 496May 2013 — avg 199 · peak 398Oct 2013 — avg 194 · peak 418Mar 2014 — avg 149 · peak 308Aug 2014 — avg 145 · peak 246Jan 2015 — avg 111 · peak 219Jun 2015 — avg 96 · peak 186Nov 2015 — avg 82 · peak 192Apr 2016 — avg 68 · peak 153Sep 2016 — avg 73 · peak 162Feb 2017 — avg 73 · peak 146Jul 2017 — avg 104 · peak 215Dec 2017 — avg 139 · peak 335May 2018 — avg 114 · peak 204Oct 2018 — avg 63 · peak 131Mar 2019 — avg 48 · peak 105Aug 2019 — avg 46 · peak 88Jan 2020 — avg 49 · peak 110Jun 2020 — avg 47 · peak 86Nov 2020 — avg 49 · peak 96Apr 2021 — avg 44 · peak 103Sep 2021 — avg 39 · peak 83Feb 2022 — avg 43 · peak 92Jul 2022 — avg 42 · peak 82Dec 2022 — avg 37 · peak 81May 2023 — avg 36 · peak 79Oct 2023 — avg 32 · peak 67Mar 2024 — avg 38 · peak 79Aug 2024 — avg 32 · peak 58Jan 2025 — avg 25 · peak 74Jun 2025 — avg 17 · peak 45Nov 2025 — avg 27 · peak 62Apr 2026 — avg 24 · peak 53Aug 2026 — avg 17 · peak 38
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Attention

2422026-05-31 — 8 pageviews2026-06-04 — 7 pageviews2026-06-08 — 15 pageviews2026-06-12 — 10 pageviews2026-06-16 — 9 pageviews2026-06-20 — 10 pageviews2026-06-24 — 10 pageviews2026-06-28 — 10 pageviews2026-07-02 — 7 pageviews2026-07-06 — 5 pageviews2026-07-10 — 4 pageviews2026-07-14 — 10 pageviews2026-07-18 — 10 pageviews2026-07-22 — 5 pageviews2026-07-26 — 15 pageviews2026-07-30 — 11 pageviews2026-08-03 — 11 pageviews2026-08-07 — 13 pageviews2026-08-11 — 11 pageviews2026-08-15 — 10 pageviews2026-08-19 — 13 pageviews2026-08-23 — 7 pageviews2026-08-27 — 17 pageviews2026-08-31 — 15 pageviews2026-09-04 — 16 pageviews2026-09-08 — 11 pageviews2026-09-12 — 18 pageviews2026-09-16 — 9 pageviews2026-09-20 — 7 pageviews2026-09-24 — 22 pageviews2026-09-28 — 11 pageviews2026-10-02 — 12 pageviews2026-10-06 — 8 pageviews2026-10-09 — 15 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Completion

60+
achievements tracked
1.1%
earned "Fighting for A Greater Cause"
0.2%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsLinuxMulti-playerPvPOnline PvPCo-opOnline Co-opModsMods (require HL2)Steam AchievementsSteam WorkshopCamera Comfort1 DLC

12 supported languages: English, Russian, French, Italian, German, Spanish - Spain, Danish, Dutch, Portuguese - Portugal, Portuguese - Brazil, Simplified Chinese, Spanish - Latin America

Post-launch support: 1 DLC released, first 2018-01-25 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)2,0743%106

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Where its players are

Share of Steam reviews by language (top languages measured) — a proxy for where the player base lives.

Player tags

FPSModCo-opIndieActionHorrorShooterZombiesSurvivalAdventure

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Star Control®: OriginsDon't Knock TwiceGRAVImmortal: UnchainedRebel Galaxy OutlawApsulov: End of GodsDays Gone

Similarity via IGDB.

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