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Codex Mortis is a necromantic survival bullet-hell where you wield death against endless undead. Build a necromancer from five dark magic schools, craft lethal spell synergies, and command undead armies solo or co-op. Fight Lothar through Escape, Challenge, and Eternal modes across procedurally generated worlds.
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Current Lowest Price

2.83$
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Release Date

24 Sep, 2026

Publisher/Developer

GROLAF, CRUNCHFEST

Reviews

Steam: 80.85% positive (76/94)
Metacritic: -

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CODEX MORTIS Steam Price History Chart

Current Steam price: 3.99$
Lowest Steam price ever: 2.79$ — 2026-10-08
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CODEX MORTIS description

CODEX MORTIS

Codex Mortis is a necromantic survival bullet hell where you wield forbidden powers of death against an endless tide of the undead. 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 to unleash unstoppable combos.

  • 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 yields burning explosions, while Curses + Summoning traps foes in legions of the undead.

Three game modes

  • Escape Mode: Race against time before the immortal Lothar hunts you down
  • Challenge Mode: Build your character, face Lothar in an epic boss fight
  • Eternal Mode: No time limits. Grind for heroes, artifacts, and ultimate power

Infinite build variety

Blend active spells from multiple magic schools to create unique, on-the-fly strategies. Command Heroes with their own abilities, or dive into co-op with friends to synchronize devastation.

Progression and replayability

Equip Artifacts that grant powerful bonuses and push your necromancer deeper into mastery. Deep progression improves damage, cooldowns, health, speed, and more. Worlds are procedurally generated for every run, ensuring fresh chaos and new synergies each time you play.