
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
I really enjoy the game and the updates at the moment are flying in which is great, it would be cool if we could see something other than the same 6 synergies on every single spell ever though, it's always burn, hem, weaken, confuse etc. nothing unique, imagine if life drain targets fired blood lances or something
It made by Ai. I Couldn't care less. i got my $4.00 worth of fun out of it. I am really looking forward to seeing how Ai enables people to create games that never could before just from whatever is floating around in their heads because they didn't have time to learn to program, create models, etc. We are this far already. The next few years are going to be really interesting.
I have no idea as to what I'm collecting most of the time. But I bloody love it lol. The synergy system is cool, I'm glad they added it to the game. It may be in early access, but it has a good amount of content it would appear. I've not played a ton yet. But the price is fantastic, and it'll be fun to see how the game evolves. Everything is absolute chaos, but in a good way. If you enjoy the Survivor-Like genre, you'll most likely enjoy this game.
시원하게 밀어내는 재미는 있는데, 개선할 게 많다. 1. 화면이 다 가려져서 안 보인다. 투명도 조절 옵션이 필요하다. 1-1. 잡몹 크기 좀 줄여라. 1-2. 각 오브젝트에 충돌박스 없애라. 짜증만 난다. 2. 사막맵 바꿔야한다. 서바이벌류 게임하는 이유가 뇌빼고 편하게 하는건데, 의미없이 왔다갔다 불필요하다. 2-1. 샌드웜 못 죽이게 할 거면 출현빈도라도 줄여야한다. 피하지도 못 할 만큼 잔뜩 나오면 그냥 무시하고 맞게되는데, 그러면 이게 무슨 의미가 있나. 3. 시너지, 스킬범위 포함해서 컨텐츠는 추가하면 되겠지만, 지정된 시너지만 찾아 쓰기보단 스킬트리처럼 배열을 바꿔가며 조합을 짜게끔 하는게 나을 것 같다.
**👍 Empfehlung – Überraschend gutes Bullet-Hell mit eigenem Twist** Codex Mortis hat mich ehrlich gesagt positiv überrascht. Auf den ersten Blick wirkt es wie ein weiterer *Vampire-Survivors-ähnlicher* Bullet-Hell-Titel, aber nach kurzer Spielzeit merkt man schnell, dass hier mehr dahinter steckt. Besonders das Nekromantie-Thema funktioniert sehr gut und gibt dem Gameplay einen eigenen Charakter. Die Kombination aus verschiedenen dunklen Magieschulen sorgt für interessante Builds und motiviert dazu, neue Synergien auszuprobieren. Dazu kommt das Beschwören von Untoten-Armeen, was taktisch mehr Tiefe reinbringt als bei vielen Genre-Vertretern. **Was mir besonders gefällt:** * Atmosphärisches Dark-Fantasy-Setting * Viele Build-Möglichkeiten durch verschiedene Magie-Schulen * Solider Progression-Loop mit hohem Wiederspielwert * Läuft performant und direkt zugänglich * Solo und Koop möglich Auch technisch läuft das Spiel stabil und fühlt sich bereits jetzt rund an. Für ein Indie-Projekt – und besonders mit dem experimentellen Entwicklungsansatz – ist das Ergebnis wirklich beeindruckend. Das Gameplay macht schnell süchtig und „nur noch eine Runde“ passiert hier regelmäßig. Wer Bullet-Hell-Survivor-Games mag, sollte Codex Mortis definitiv im Auge behalten. **Klare Empfehlung.**
au top plein de possibilités donc à avoir dans la bibliothèque
けっこう遊べる 値段も安い
Great game with excellent developers. I'm still in early hours playing this, but I love it.
Un bon petit jeu style Vampire Survivors, après une dure journée de TAFF ça fais du bien de tout dégommer !! addictif à souhait ! Je recommande
Absolute chaos. Bullet heaven games are usually chaotic, but this one is super hard to read.
Related
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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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