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CODEX MORTIS
Death is your weapon. Mix five schools of dark magic, unleash devastating spell synergies, and raise undead armies in this necromantic bullet hell. Infinite builds, solo or co-op – embrace the forbidden and dominate. 100% AI-driven development.

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Since the game is made using AI, we are able to iterate on changes and add new content very quickly — which we are already doing, mainly by incorporating feedback from players and beta testers on our Discord server. We want CODEX MORTIS to be entirely community-driven, and before we finish the final version, we want to build it together with you, because we see that a lot of content, mechanics, and new worlds will turn out better when based on your feedback.”

Approximately how long will this game be in Early Access?

“Approximately six months — we expect that during this time we will gather enough feedback and ideas to complete the final version.”

How is the full version planned to differ from the Early Access version?

“We plan to add additional worlds and levels, more spells and more synergies, as well as online multiplayer.”

What is the current state of the Early Access version?

“The game is completely playable, contains dozens of hours of gameplay content, and 8 full gameplay levels - basically, all features and content mentioned in "About" section. ”

Will the game be priced differently during and after Early Access?

“We're not planning on changing the price when we leave early access.”

How are you planning on involving the Community in your development process?

“We want to engage the community the way we already do — by collecting feedback from Discord, introducing surveys, and encouraging discussions about ideas on both the Steam Community forum and Discord from day one of Early Access.”
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Download CODEX MORTIS Demo

This game is not yet available on Steam

Planned Release Date: Mar 26, 2026

This game plans to unlock in approximately 4 days

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About This Game

Codex Mortis is a necromantic survival bullet hell where you wield the forbidden powers of death against an armies of the undeads. Command minions, forge devastating spell combinations, and fight alongside powerful heroes—solo or in local coop—in your quest for ultimate power.

Plan before you slaughter. Assemble your death squad and equip them for annihilation—before the mission begins. Craft your necromancer from dozens of unique skills across five schools of dark magic, theory-craft lethal synergies, and design builds that will paint the battlefield with chaos.

Once the mission starts, watch your masterpiece unfold: detonate corpses, command undead armies, sacrifice blood for apocalyptic explosions. The more you combine, the more beautiful the DESTRUCTION.

DEVASTATING SPELL SYNERGIES

Mix and match spells across 5 schools of dark magic:

  • Necromancy - Bone spears, corpse explosions, skeletal prisons

  • Summoning - Raise undead armies and bone golems

  • Blood Magic - Sacrifice life for devastating power

  • Soul Magic - Harvest essence, phase through enemies

  • Curses - Break enemy will, spread terror and confusion

Combine spells for devastating effects. Blood Magic + Necromancy = burning explosions. Curses + Summoning = terrorized enemies trapped by undead legions.

EIGHT LEVELS

Find perfect builds for eight levels available in Early Access: Forgotten Graveyard, Sand Tomb, Cursed Catacombs, Bone Cathedral, Void Sanctum, Soul Nexus, The Throne Room, North Pole. 

INFINITE BUILD VARIETY

  • Mix active spells across magic schools for unique combinations

  • Command Heroes with their own abilities (or play co-op with friends!)

  • Equip Artifacts that grant powerful bonuses

  • Deep progression - upgrade damage, cooldowns, health, speed, and more

Procedurally generated worlds - every run is different

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

AI is used for entire code of the game, text, arts, sounds and music.

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11
    • Processor: Intel Core i3-2100 / AMD FX-4300
    • Memory: 4 GB RAM
    • Graphics: NVIDIA GeForce GTX 650 / AMD Radeon HD 7750 / Intel HD Graphics 4000 / 1 GB VRAM
    • Storage: 140 MB available space
    • Sound Card: Any
    Recommended:
    • Requires a 64-bit processor and operating system
    Minimum:
    • OS: Ubuntu 20.04+ / SteamOS 3.0+
    • Processor: Intel Core i3 / AMD Ryzen 3
    • Memory: 4 GB RAM
    • Graphics: Vulkan 1.1 compatible GPU
    • Storage: 140 MB available space
    • Sound Card: Any compatible sound card
    • Additional Notes: Native Linux build
    Recommended:
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