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- Call to Arms - Gates of Hell: Ostfront
Call to Arms - Gates of Hell: Ostfront
A Second World War strategy game where friends share an army and fight the computer on the Eastern Front.
Online co-op.
- Online
Where to buy
Playing together
- Online co-opYesPlayer count not confirmed
- 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 command soldiers, tanks and guns in large battles on the Eastern Front of the Second World War. From a top-down map you give orders, or you take direct control of one soldier or vehicle and fight in first or third person. The maps are copies of real battlegrounds.
Co-op puts you on the same side against the computer, in the single-player missions, in skirmishes and in the Conquest campaign. In Conquest you build your own army, research new units and push forward along different paths. The host can hand units to friends, so each of you steers part of the force.
There is a lot to learn, from armor and ammunition to switching views, and the studio itself says it takes a while to master. Battles can run long. The game also has solo and PvP modes. It suits a group that likes planning and can put up with a rough start.
How it feels
Kind of game
You play on the same side through shared levels, matches, missions or jobs. Progress comes from combining your actions toward the same objective.
- At its heart
- Now and then
- Time to hang out
- Building and creating
- Sessions
- Repeatable runs
- About
- Warfare
Rated on our own feel scale. 8 sources back these ratings.
Screenshots
From the Steam store page. Open one to see it full size.
If you liked Call to Arms - Gates of Hell: Ostfront
You will probably enjoy these too. Each one says why.
Men of War: Assault Squad 2
Why it scores 96%
What they share
- Kind of game
- Shared team objectives
- About
- Warfare
- Core to both
- Getting better, Planning ahead, Fighting
- Notable in both
- Working in sync, Tension and danger
- Sessions
- Repeatable runs
- Co-op
- Online co-op
How Men of War: Assault Squad 2 differs
- Less to unlock than Call to Arms - Gates of Hell: Ostfront
- 8 online
Both give your team shared objectives to work through together. Both are about soldiers at war. Both reward you for getting better.
But less to unlock than Call to Arms - Gates of Hell: Ostfront.
Door Kickers 2: Task Force North
Why it scores 92%
What they share
- Kind of game
- Shared team objectives
- About
- Warfare
- Core to both
- Planning ahead, Fighting
- Notable in both
- Working in sync, Tension and danger, Getting better, Unlocks and progress
- Sessions
- Repeatable runs
- Co-op
- Online co-op
How Door Kickers 2: Task Force North differs
- More figuring things out than Call to Arms - Gates of Hell: Ostfront
- 4 online
Both give your team shared objectives to work through together. Both reward planning before you act. Both have a lot of fighting side by side.
But more figuring things out than Call to Arms - Gates of Hell: Ostfront.
Age of Empires II: Definitive Edition
Why it scores 78%
What they share
- Kind of game
- Shared team objectives
- About
- Warfare
- Core to both
- Planning ahead
- Notable in both
- Working in sync, Tension and danger, Getting better, Fighting
- Sessions
- Repeatable runs
- Co-op
- Online co-op
How Age of Empires II: Definitive Edition differs
- More story than Call to Arms - Gates of Hell: Ostfront
- Less to unlock than Call to Arms - Gates of Hell: Ostfront
- 7 online
Both give your team shared objectives to work through together. Both play in runs or missions you repeat. Both are about soldiers at war.
But more story than Call to Arms - Gates of Hell: Ostfront.
All co-op facts
Last checked 28 October 2026. The small numbers link to the page that states each fact.
Co-op
- Most players online
- Not confirmed
- 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 data marks the game as not free and shows a price. Only a Windows edition exists. Demos and betas do not establish ongoing free co-op.
- 2
- 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
11 pages
store.steampowered.comStore page, read 28 October 2026
Backs Online co-op, Genres, About, Kind of game, Sessions, Fighting, Building and creating, Unlocks and progress, Planning ahead.
- Online co-op: The description says twelve historical single-player missions can also be played in co-op with friends, and that Conquest has a co-op mode. User tags include Online Co-Op.
- Genres: The short description calls it a realistic RTS and RTT game.
- About: The text sets the game on the Eastern Front between the USSR and Germany, from June 1941 to May 1945.
- Kind of game: Co-op is offered for the missions and for Conquest, with both players on the same side. User tags include PvE.
- Sessions: User tags include Replay Value, and the dynamic campaign can run from short to unlimited lengths.
- Fighting: The feature list covers infantry, tanks, heavy weapons, air support and artillery. User tags include Shooter.
- Building and creating: The feature list names mines, obstacle laying and foxhole building among the mechanics.
- Unlocks and progress: In Conquest you compose your own army group, research new units and advance along different paths.
- Planning ahead: User tags include Strategy, Real Time Tactics and RTS.
store.steampowered.comStore data, read 28 October 2026
Backs Steam app ID, Online co-op, Platforms, Release status, Release date, Free base co-op.
- Online co-op: Categories include Co-op and Online Co-op.
- Platforms: Backs windows only. Steam lists no macOS or Linux build.
- Release status: Steam lists the game as released, not in early access.
- Release date: Steam shows Jun 11, 2021.
- Free base co-op: Steam data marks the game as not free and shows a price. Only a Windows edition exists. Demos and betas do not establish ongoing free co-op.
store.steampowered.comStore data, read 28 October 2026
Backs Steam Deck.
- Steam Deck: Valve rates the game Unsupported on Steam Deck.
wikidata.orgWikidata, read 28 October 2026
Backs Wikidata item, Release date.
- Wikidata item: The label matches and P1733 is 400750. Wikidata types the item as an expansion of the first Call to Arms, but Steam sells it as a game and the studio calls it its base game.
- Release date: P577 is 2021-06-11.
barbed-wire.euOfficial site, read 28 October 2026
Backs Online co-op, Platforms, Release date, Genres, Sessions.
- Online co-op: The studio page says the game offers PvP, PvE, single player and co-op, and that the dynamic campaign generator works in PvE co-op.
- Platforms: The Ostfront section lists Windows.
- Release date: The Ostfront section gives June 11th, 2021 for the base game.
- Genres: The Ostfront section gives the genre as real-time tactical-strategy.
- Sessions: The page calls the dynamic campaign generator endlessly replayable.
steamcommunity.comOfficial news, read 28 October 2026
Backs Online co-op, Kind of game.
- Online co-op: The studio post of 2026-10-01 says all single-player missions can be played in co-op, as can the dynamic campaign generator, which it calls Conquest.
- Kind of game: The same post puts the missions and Conquest in co-op, so friends share the same objectives.
steamcommunity.comOfficial news, read 28 October 2026
Backs Online co-op, Planning ahead.
- Online co-op: The studio post of 2023-08-28 lists co-op dynamic campaigns and co-op skirmishes and missions among the game modes.
- Planning ahead: The same post says strategy and tactics are both dominant factors, most of all in Conquest.
steamcommunity.comOfficial news, read 28 October 2026
Backs Working in sync.
- Working in sync: Patch notes of 2025-07-15 add a co-op lobby setting where the host decides whether bought reinforcements go to the buyer or are shared evenly.
steamcommunity.comOfficial news, read 28 October 2026
Backs Working in sync.
- Working in sync: Patch notes of 2026-05-07 add a host action that spawns a whole unit stage and hands it to friends in co-op Conquest.
steamcommunity.comOfficial news, read 28 October 2026
Backs Getting better.
- Getting better: The studio post of 2025-06-26 tells new players the game takes a while to master, is not forgiving and has a learning curve, and it points them to the tutorial missions.
tomsgaming.comPress, read 28 October 2026
Backs Kind of game, Tension and danger, Time to hang out, Unlocks and progress.
- Kind of game: Impressions from 2022-07-12 say the game is far more fun in co-op than alone and that the campaign can be played in co-op.
- Tension and danger: Describes stealth missions against bad odds, where one mortar hit costs several men, and enemy attacks in the dynamic campaign.
- Time to hang out: Describes defending for hours on end in the dynamic campaign, which leaves long stretches between fights.
- Unlocks and progress: Describes unlocking units through research and keeping persistent units in the dynamic campaign.