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Global Conflict Blue

Welcome to Global Conflict Blue (GCB), an open-source real-time naval strategy game. GCB simulates modern naval and air combat from the third-person perspective of a theater commander.

Download Latest Release

Latest Downloads

Version 1.26 (150801 full installer, 716 MB)

Version 1.26 (patch from 150218 to 150228, 78.4 MB)

Version 1.26 (patch from 150228 to 150801, 13.7 MB)

Game Manual


  • Global map - The entire surface of the earth is available for play including global bathymetry data for ocean depth
  • Real-time modeling - Flight dynamics, guidance, and sensor models are incorporated real-time for a high level of realism and fluid game play. Broad simulation capabilities covering areas such as air-to-air refueling, chaff, flare, and subsurface countermeasures, mines, smart bombs, terrain masking of sensors, and damage physics.
  • Graphical User Interface - An interactive map with commands driven by context menus. The GUI enables intuitive and fast action for managing operations. Multiple map layers cover views spanning a few kilometers up to an entire continent.
  • 3D graphics - Watch the battle unfold with a real-time 3D view. Physical 3D models are also integrated into the simulation to provide accurate optical and damage cross-sections.
  • Editable Database and Scenarios - The stock game database includes hundreds of platforms, along with associated weapons, sensors, and equipment. Database and scenario files are saved in an open format for user editing. A database editor and in-game scenario editor are packaged with the main application. Fifteen exciting scenarios are available to play, along with four tutorial scenarios.
  • Flexible time-scaling - Player-controlled time acceleration is supported to keep the game pace at an exciting level.
  • Customization - AI scripts, menus, platform database, 3D models, and symbology in an open format to allow player customization
  • Large-scale design - Capability to handle 1000+ units to support complex engagements.
  • Multiplayer mode - Server-based multiplayer mode
  • More - Much more to come!


Scenario select
Database viewer
Database viewer
Multiplayer connect
Multiplayer lobby
Air ops
Air ops
Arleigh Burke
Formation graphics

Get the Code

Download the code on GitHub

Community Forum

Visit the gcblue forum

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