DMZ Codex

Your map. Your intel. Your next deployment.

DMZ Codex is a free companion for Call of Duty: Modern Warfare 4 DMZ, bringing the Hajin interactive map, crafting recipes, equipment database and practical guides into one app.

Plan your route, check what you need and keep useful information close during your run.

EXPLORE HAJIN

Find your way through the exclusion zone with an interactive DMZ map.

• Explore major locations, strongholds and key rooms.
• Locate exfils, services and radiation zones.
• Toggle map layers to focus on what matters.
• Zoom in to inspect an area before planning your route.

KNOW WHAT TO LOOT

Give the items in your backpack a purpose.

• Browse items, keys and crafting ingredients.
• Check 3D Printer recipes and required materials.
• See which recipes use an ingredient.
• Build a shopping list for your planned crafts.
• Follow related entries to explore equipment and its uses.

UNDERSTAND YOUR OPTIONS

Keep equipment and threat information within reach.

Browse weapons, attachments, armor, backpacks, bosses and vehicles, alongside operator traits and progression.

Open illustrated detail pages and move between related entries without leaving the app.

FIND ANSWERS FASTER

Search the codex by names, descriptions, crafting materials, objectives and guide text.

• Browse results grouped by category.
• Read DMZ guides directly inside the app.
• Follow linked entries for more detail.
• Explore guidance on extraction, radiation, armor, backpacks and other DMZ mechanics.

KEEP YOUR PLANS TOGETHER

Manually track mission objectives, FOB upgrades and planned crafting. Return to your saved progress when you are ready for another run.

Built for the way you play

In-game access: Open the companion with customizable hotkeys.

Second-screen support: Keep the map, database or a guide on another monitor.

Growing game intel: Content is added and corrected as new game information becomes available. Use Refresh to load the latest published updates.

Get ready for your next run

Install DMZ Codex and bring your Hajin map, crafting reference and DMZ guides together.

Explore the database: dmzcodex.com

Get support and share feedback: Join our Discord community

DMZ Codex is an unofficial fan companion. It is not affiliated with or endorsed by Activision or Infinity Ward.