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Sea Land Air: Four Nations War
A hidden-information strategy game: secretly deploy pieces, coordinate across railways, sea routes and air routes, and capture enemy flags. Play Sea Land Air, Classic 2v2 Four-Nation Army Chess or 1v1 Land Duel with normal/hard AI, multiplayer and custom games.

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Features
Languages:
Interface Full Audio Subtitles
English ✔
French ✔
German ✔
Russian ✔
Japanese ✔
Polish ✔
Simplified Chinese ✔
Traditional Chinese ✔
Spanish - Spain ✔
Portuguese - Brazil ✔
Portuguese - Portugal ✔
Korean ✔
Spanish - Latin America ✔
See all 13 supported languages
Content
Includes Interactive Elements

In-game chat, Online interactivity

This game is not yet available on Steam

Planned Release Date: October 2026

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About This Game

One game, three battlefields

Secretly deploy 33 land, naval and air pieces in Sea Land Air; contest nine central junctions and curved railways in Classic Four-Nation Army Chess; or face one opponent across Land Duel's 5×13 battlefield.

Deduction or custom rules

Infer hidden identities from movement, combat and reconnaissance, protect your flags, and capture the enemy's. Hosts can instead reveal every piece and customize rail, sea and air movement limits.

Solo and multiplayer

Choose from three strategy modes: Sea Land Air, Classic 2v2 Four-Nation Army Chess and 1v1 Land Duel. All three support normal and hard AI plus Steam Relay, LAN and direct-connect rooms. Secret deployment, private per-player views, seat-swap requests and multiplayer replays keep each match complete from setup to review.

System Requirements

    Minimum:
    • OS: Windows 10 64-bit
    • Processor: Dual-core 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: DirectX 11 compatible graphics
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Additional Notes: Broadband Internet connection required for online multiplayer.
    Recommended:
    • Memory: 8 GB RAM
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
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