- Games
- Zero Hour
Zero Hour
A slow tactical shooter where a squad of up to ten clears buildings, arrests suspects and rescues hostages.
Online co-op for up to 10 players.
- 10 online
Where to buy
Playing together
- Online co-op10 players
- Local co-opNot confirmed
- Not confirmedFriends on different platforms, such as PC and PlayStation, can play together.
- Not confirmedA friend can join or leave while you are already playing, without starting over.
- Not confirmedFriends play free with a Friend's Pass or similar.
- Steam DeckUnsupportedValve's own rating
About the game
You join a SWAT-style squad that raids buildings in Bangladesh. Each mission gives you objectives such as arresting or taking down suspects, rescuing hostages and defusing bombs, and then the team walks to the extraction point. The pace is slow on purpose. You go over the plan at a table, pick your weapons and tools, and open doors one at a time.
Co-op missions take up to ten players online, or you can go alone with AI squad mates. If your health drops very low you go down, and a teammate with a medkit has to revive you. Rules of engagement cost points when you shoot a suspect who is surrendering or has shown no hostility, so the squad calls out what it sees before anyone fires. The game also has a separate 5v5 mode against other players.
It is serious and careful, not silly. It suits a group that likes slow planning and talking through every room.
How it feels
Kind of game
A team takes on missions or runs full of enemies. You pick gear, cover each other and pick each other up.
- At its heart
- Now and then
- Story
- Time to hang out
- Exploring
- Unlocks and progress
- Sessions
- Repeatable runs
- About
- Police and SWAT
Rated on our own feel scale. 7 sources back these ratings.
Screenshots
From the Steam store page. Open one to see it full size.
If you liked Zero Hour
You will probably enjoy these too. Each one says why.
Ready or Not
Why it scores 91%
What they share
- Kind of game
- Squad shooter
- Core to both
- Tension and danger, Fighting
- About
- Police and SWAT
- Notable in both
- Working in sync, Planning ahead, Getting better
- Sessions
- Repeatable runs
- Co-op
- Online co-op
- 5 online
- Crossplay
Both send your squad into fights where you watch each other's backs. Both keep you on edge. Both are about police and SWAT work.
No big difference from Zero Hour.
GROUND BRANCH
Why it scores 90%
What they share
- Kind of game
- Squad shooter
- Core to both
- Tension and danger, Fighting
- Notable in both
- Working in sync, Planning ahead, Getting better
- Sessions
- Repeatable runs
- Co-op
- Online co-op
- 8 online
Both send your squad into fights where you watch each other's backs. Both have a lot of fighting side by side. Both play in runs or missions you repeat.
No big difference from Zero Hour.
Arma 3
Why it scores 81%
What they share
- Kind of game
- Squad shooter
- Core to both
- Fighting
- Notable in both
- Working in sync, Tension and danger, Planning ahead, Getting better
- Sessions
- Repeatable runs
- Co-op
- Online co-op
How Arma 3 differs
- More relaxed than Zero Hour
- Online
Both send your squad into fights where you watch each other's backs. Both have a lot of fighting side by side. Both play in runs or missions you repeat.
But more relaxed than Zero Hour.
All co-op facts
Last checked 28 October 2026. The small numbers link to the page that states each fact.
Co-op
- Fewest players online
- Not confirmed
- Local co-op
- Not confirmed
- Most players on one screen
- Not confirmed
- Split or shared screen
- Not confirmed
- Separate-device co-op
- Not confirmed
- Most players on separate devices
- Not confirmed
- Free base co-op
- No
Steam marks the game as not free and sells the base game for a price. The paid add-ons are weapon skins.
- 68
- Confirmed free setups
- Does not apply
- Crossplay
- Not confirmed
- Crossplay between
- Not confirmed
- Friends can join mid-game
- Not confirmed
- Only one of you needs to buy it
- Not confirmed
- Voice chat by distance
- Not confirmed
Sources
13 pages
store.steampowered.comOfficial news, read 28 October 2026
Backs Online co-op, Most players online.
- Online co-op: The maker's post of 2023-02-03 describes the co-op mode and its menu.
- Most players online: The post says co-op missions now take up to 10 players, and the current store text repeats this. PCGamesN says 5, so the maker's statement wins.
store.steampowered.comOfficial news, read 28 October 2026
Backs About, Getting better.
- About: The maker's post of 2020-09-17 frames co-op as the SWAT experience. Missions have you arrest or neutralise suspects, rescue hostages and defuse bombs before extraction.
- Getting better: Score depends on following the rules of engagement, such as not firing at a surrendering suspect, so a perfect score needs care.
store.steampowered.comOfficial news, read 28 October 2026
Backs Release status, Release date, Working in sync, Tension and danger, About.
- Release status: The maker's post of 2024-09-09 presents version 1.0 and thanks players for the Early Access period, so the game has left early access.
- Release date: Post is dated 2024-09-09, the day of the full release.
- Working in sync: Adds a downed state in co-op. A teammate with a medkit has to revive you.
- Tension and danger: In co-op you go down when health drops below 15 HP.
- About: New map texts describe criminal operations that the team has to shut down.
store.steampowered.comOfficial news, read 28 October 2026
Backs Platforms.
- Platforms: Post of 2026-08-21 says PS5 and Xbox Series X|S versions are coming this fall. They are not on sale yet, so only Windows is listed.
store.steampowered.comStore page, read 28 October 2026
Backs Online co-op, Most players online, Kind of game, Tension and danger, Story, Working in sync, Exploring, Fighting, Planning ahead, Unlocks and progress.
- Online co-op: Key features list Co-op and Online Co-op, and the text promises cooperative missions.
- Most players online: The text says cooperative missions take up to 10 players. The separate 5v5 mode is player against player.
- Kind of game: User tags include Tactical, Team-Based, Co-op and Shooter. The text is about a squad working together with teamwork, strategy and precision.
- Tension and danger: The text calls the pace serious and slow, with methodically intense play.
- Story: The text mentions story-driven NPCs and objectives.
- Working in sync: The text says success depends on teamwork, strategy and precision.
- Exploring: The text lists over 18 maps in Bangladesh, with details such as lifts, bulletproof glass and shutters.
- Fighting: User tags include Shooter, FPS and Combat.
- Planning ahead: The text describes a planning table before a mission, 23 weapons and 18 utilities, and a breaker switch that controls the lights.
- Unlocks and progress: The text says the K9 dog is available after three missions, and weapons can be customised.
store.steampowered.comStore data, read 28 October 2026
Backs Steam app ID, Online co-op, Release status, Release date, Platforms, Free base co-op.
- Online co-op: Categories include Co-op and Online Co-op.
- Release status: Steam lists the game as released, not coming soon.
- Release date: Steam shows Sep 9, 2024.
- Platforms: Backs windows only. Steam lists no macOS or Linux build.
- Free base co-op: Steam marks the game as not free and sells the base game for a price. The paid add-ons are weapon skins.
store.steampowered.comStore data, read 28 October 2026
Backs Steam Deck.
- Steam Deck: Valve rates the game Unsupported on Steam Deck.
store.epicgames.comStore page, read 28 October 2026
Backs Online co-op, Most players online, Platforms, Release date, Genres, Free base co-op.
- Online co-op: Features list Co-op, Competitive, Online Multiplayer and Single Player.
- Most players online: The text repeats that co-op missions take up to 10 players.
- Platforms: The page lists Windows system requirements only.
- Release date: The page shows 09/09/24.
- Genres: Lists the genres First Person and Shooter.
- Free base co-op: The page sells the base game for a price with a Buy Now button.
wikidata.orgWikidata, read 28 October 2026
Backs Wikidata item, Genres, Release date.
- Genres: P136 is first-person shooter.
- Release date: P577 gives 2024-09-09 for Windows, and 2020-08-12 marked as early access.
pcgamesn.comPress, read 28 October 2026
Backs Most players online, Kind of game, Release date.
- Most players online: Launch news says PvE squads are up to five. This conflicts with the maker's newer 10-player statements, which win.
- Kind of game: Compares the game with Ready or Not, the SWAT series and earlier Rainbow Six games.
- Release date: Launch news puts the 1.0 launch on 2024-09-09.
ibtimes.comPress, read 28 October 2026
Backs Tension and danger, Planning ahead.
- Tension and danger: Feature of 2021-06-24 says combat is deadly, so play is slow and charging in is discouraged.
- Planning ahead: Teams can breach loudly with explosives, or work quietly by cutting power and using suppressed weapons and night vision.
gurbegaming.nlPress, read 28 October 2026
Backs Tension and danger, Getting better, Planning ahead, Sessions, Story, Working in sync.
- Tension and danger: Review calls the play tense and deliberate, with recoil and enemies punishing reckless moves.
- Getting better: Review describes a steep learning curve and rates the difficulty 8 out of 10.
- Planning ahead: Review says planning is central and patient positioning is rewarded.
- Sessions: Review says replay value comes from different loadouts and roles and from a higher difficulty.
- Story: Review calls the story minimal, delivered in short briefings, and scores it low.
- Working in sync: Review says winning with good coordination in co-op and PvP feels especially satisfying.
pcbuilderbd.comPress, read 28 October 2026
Backs Working in sync, Tension and danger, Time to hang out.
- Working in sync: Review of 2021-02-28 says the game depends heavily on cooperation, and playing alone is very hard.
- Tension and danger: Praises the night lighting, where flashlights give enemies away and the shadows keep players on edge.
- Time to hang out: Calls voice communication essential for the team, which points to talk about the task at hand.