Steam game

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.

$3.99 March 26, 2026

By GROLAF

Windows Linux Controller: full
View on Steam
CODEX MORTIS - GROLAF. Popular. Released March 26, 2026
Screenshot of CODEX MORTIS gameplay showing in-action mechanics Screenshot 2 of CODEX MORTIS - additional gameplay view Screenshot 3 of CODEX MORTIS - more gameplay footage Screenshot 4 of CODEX MORTIS - final gameplay screenshot

Overview

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

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