Choose Unity of Command II
Choose Unity of Command II if you want an Indie game with Shared/Split Screen and Shared/Split Screen PvP. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 1,130 Steam reviews back the pick.
Unity of Command II vs Combined Arms Operations Series
Unity of Command II and Combined Arms Operations Series both land in Strategy, Simulation on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Strategy, Simulation on Steam. Unity of Command II (2019) is 2 years older than Combined Arms Operations Series (2021). Combined Arms Operations Series scores higher on Steam reviews (100% positive) than Unity of Command II (80.6% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Combined Arms Operations Series
Choose Combined Arms Operations Series if you want the Online PvP, Online Co-op, and Co-op side of the pairing. On Steam, it's currently about 33% cheaper on the Steam Store. Combined Arms Operations Series launched in 2021.
Both Unity of Command II and Combined Arms Operations Series sit in Strategy and Simulation on Steam and both list Multi-player and PvP, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Unity of Command II |  Combined Arms Operations Series | |
|---|---|---|
| Released | 2019 | 2021 |
| Genres | Strategy, Indie, Simulation | Strategy, Simulation |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 29.99 USD | 19.99 USD |
| Steam reviews | 80.6% positive (1,130 reviews) | 100% positive (16 reviews) |
| Multiplayer | Multi-player | Multi-player, Online Co-op, Co-op |
| Developers | 2x2 Games, Croteam | Nemeton Singularity Simulations |
Side by side
- Both share Strategy, Simulation on Steam.
- Unity of Command II (2019) is 2 years older than Combined Arms Operations Series (2021).
- Combined Arms Operations Series scores higher on Steam reviews (100% positive) than Unity of Command II (80.6% positive).
- Combined Arms Operations Series is currently ~33% cheaper on Steam than Unity of Command II (19.99 USD vs. 29.99 USD).
- Combined Arms Operations Series has co-op; Unity of Command II does not.
- Unity of Command II is Deck Verified on Steam Deck; Combined Arms Operations Series has no Deck rating yet.
Unity of Command II vs Combined Arms Operations Series — FAQ
- Should I play Unity of Command II or Combined Arms Operations Series first?
- If you want chronology, Unity of Command II (2019) came out before Combined Arms Operations Series (2021). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Unity of Command II and Combined Arms Operations Series similar?
- They overlap on Strategy, Simulation on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Does Unity of Command II run on Steam Deck?
- Yes — Unity of Command II is rated Deck Verified by Valve. Combined Arms Operations Series doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.