
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.
Modeled estimate, not a reported figure. How we estimate →
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About
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.
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.
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.
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

Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, French, Italian, German, Spanish - Spain, Bulgarian, Simplified Chinese, Czech, Danish, Finnish, Greek, Spanish - Latin America +16 more
Engagement
Hours played at review time, across 40 reviews with recorded playtime.
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
This game is great! Great value for the money and plays well. Building your character with new skills and synergies is a great way to play same maps and try new fun builds for harder difficulties.
Got a key from the dev, however no mention of genAI was made and I had to find out by searching through press kit documents. Incredibly disappointed that this game and this dev are so AI positive.
plutot sympa meme pour de l'ia
Na ekranie dzieje się stanowczo za dużo. Po pół godziny mam dość.
The demo that I thought was abandoned has been turned into a full fledged game, new skills, animations, logical character progression, interesting concepts for new maps (though twice I did not really know what killed me). All in all even more fun now and given the very symbolic price, one of the few non-free games that I decided to play. :D The AI controls enemy and character progression, it's not literally simply made by AI all alone, the game devs really cooked here. Is it perfect? Probably not, some of the new skills don't feel as powerful as the old ones is a thing to polish but overall a proper gaming experience made possible by a tiny studio that surprised me with their passion for this project, so a definite recommend
Misja fabularna katedra kości jest nie możliwa do przejścia nawet na łatwym ponieważ antagonista zabija jednym dotykiem i w randomowym momencie przyspiesza tak że nie da się uciec.
The game has some very creative synergy mechanics that makes it super interesting to create builds... It also has a good progression mechanics, including for very late game, I'm a hardcore player so I like this combination to go for ever higher difficulty levels... And it's nice because there is end-game progression as well, so you are always improving. It also has additional heroes that act as companions, which expands your opportunities, like leaving one of them just to apply curses, etc... And also, artifacts, which acts as another layer of customization to create different builds... Pretty good game overall IMO!
O que esperar de um roguelite inspirado em Vampire Survivors, mas feito por IA? Não muito A nossa análise completa abaixo https://www.vailogarhoje.com/post/review-codex-mortis
Trash AI game
CODEX MORTIS -Bullet Hell -Roguelike -Ação -Cooperativo -Acesso antecipado -Interface e legendas em PT/BR -Conquistas Steam Game com elementos estilo vampire survivor, aquela chuva de balas para todo lado, com personagens estranhos e muitos inimigos mais bizarros ainda.............. Mais interessante que o game teve parte feita em IA e que nao ficou bom mesmo............... RECOMENDO
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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