Choose Headquarters: World War II
Choose Headquarters: World War II if you want a Simulation game with Multi-player, Shared/Split Screen, and Online PvP. On Steam, it has co-op, so you can bring a friend. Headquarters: World War II launched in 2024.
Headquarters: World War II vs Diamond Board
Headquarters: World War II and Diamond Board both land in Strategy 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 are Strategy games on Steam. Headquarters: World War II (2024) is 1 year older than Diamond Board (2025). Diamond Board is free; Headquarters: World War II is paid (39.99 USD). 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 Diamond Board
Choose Diamond Board if you want an Indie, Free To Play, and Casual experience. On Steam, it's free to play, so the barrier to trying it is zero. Diamond Board launched in 2025.
Both Headquarters: World War II and Diamond Board sit in Strategy on Steam, 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
 Headquarters: World War II |  Diamond Board | |
|---|---|---|
| Released | 2024 | 2025 |
| Genres | Strategy, Simulation | Strategy, Indie, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 39.99 USD | Free to play |
| Steam reviews | 74.6% positive (280 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Single-player only |
| Developers | Starni Games | Vincent Mungo, prismesmusic |
Side by side
- Both are Strategy games on Steam.
- Headquarters: World War II (2024) is 1 year older than Diamond Board (2025).
- Diamond Board is free; Headquarters: World War II is paid (39.99 USD).
- Headquarters: World War II has co-op; Diamond Board does not.
- Headquarters: World War II is Deck Playable on Steam Deck; Diamond Board has no Deck rating yet.
Headquarters: World War II vs Diamond Board — FAQ
- Should I play Headquarters: World War II or Diamond Board first?
- If you want chronology, Headquarters: World War II (2024) came out before Diamond Board (2025). 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 Headquarters: World War II and Diamond Board similar?
- They overlap on Strategy 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 Diamond Board have multiplayer like Headquarters: World War II?
- No. Headquarters: World War II supports multiplayer on Steam (Multi-player, Online Co-op, Shared/Split Screen Co-op), while Diamond Board is listed as single-player only.
- Is Diamond Board free?
- Yes — Diamond Board is a free-to-play Steam title. Headquarters: World War II is paid (39.99 USD).
- Does Headquarters: World War II run on Steam Deck?
- Yes — Headquarters: World War II is rated Deck Playable by Valve. Diamond Board doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.