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
its pretty good for 3$
e... um jogo de horda com uma mecânica de "pós vida"... poderia ser melhor, umas animações nos personagens, uns movimento de andar ou de atacar, mas a mecânica está boa, então ainda e valido!
lepsze od bomb na izreeaalem
SUMMON ALL THE SKELEs
Не нужное мнение, в рамках короткого знакомства на "Безумном ключнике") https://www.twitch.tv/kir_lucky Проект вышел отличным. Визуал и геймплей отличный. Не хватает сюжета. Да и требуется больше баланса в навыках - я с первого раза собрал имбу. За свою цену проект впоплне можно приобрести.
a Good Challenging game.
Gra jest świetna, wciągnęła mnie niczym stareńki "Crimsonland" oraz "Vampire Survivors". Dawno w nic tak dobrego nie grałem, mimo iż bywa momentami bardzo wymagająca to taktyki są tu ogromne i rozbudowane. Synergie powodują, że granie ma sens. Tak samo artefakty czy nowi bohaterowie. Idealna na odstresowanie i dobrą zabawę polecam 100%
Ich hatte es mir vor einiger Zeit gekauft Mann ist diese Spiel gut Totale Kaufempfehlung Ich wollte nur kurz reingucken 3 Stunden sind es geworden Muss ich noch mehr sagen
Top fürs Geld
Very fun, got totally sucked in and played nonstop for 3.6hours. I don´t get why people hate Ai. All inovations steals job. How come everyone reacts so heavily to this. if you can create good games with Ai I´m all for it. + Good music + 1-4 co-op palyers Adopt or die, Be a mammal or become a dinosaur. Ai is a tool so far so why not use it while we still are in control of it. In 2 years we probably don´t have a thing to say about it anyway hehe. My hope is that Ai in games are focused on dialogue and open rpgs with endless possibilites to aproach on goals. Anyhow. Quite fun game and I strongly recommend to try it out. Graphics are quite okey and it´s not worse than some other indiegames in anyway. Posted 19 December, 2025. Last edited 19 December, 2025.
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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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