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CODEX MORTIS

CODEX MORTIS

A survivors-like deckbuilder with mutating spells and ten schools of dark magic. Build devastating combos, battle through fourteen cursed levels, and spend earned points on booster packs. Survive the isometric bullet hell solo, in local co-op, or online with up to four players.

Released Sep 24, 2026 Developer GROLAF Publisher CRUNCHFEST Platforms Windows · Linux Bullet HellRogueliteOnline Co-OpAction RoguelikeAction
View on Steam ↗ $2.79 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

75.9%positive83 reviews
Recommended · 2 found this helpful

“Developers helped me q&a, I'm enjoying this game. I bought another copy for my wife. Goodness to compare with VS (VS =vampire survivors) is a little off. VS has more characters, and that's about it. This game has deeper options. I'm also an avid fan of local co-op. So I will…”

— a player, Steam review · 9 hrs played
Recommended · 3 found this helpful

“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…”

— a player, Steam review · 84 hrs played
Not recommended · 3 found this helpful

“Game was okay initially. Kinda boring but it had hope. Thought the "AI Game" was a neat hook. It was okay in small bursts. Then some huge update dropped. The interface is utterly incomprehensible and doesn't appear to work. Introduced some "packs" and "deck" concept like it's…”

— a player, Steam review · 4 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. History through 2026-07 via SteamCharts; self-collected from the Steam API since Aug 2026.

50all-time peak
0 5 10 8 avg · Apr 2026

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

92achievements
7.2%median completion
0.8%rarest: Nexus Oblivion
96.3% of players 94.9% of players 91.3% of players 84.8% of players 80.2% of players 77.0% of players 68.1% of players 60.8% of players 59.1% of players 58.0% of players 57.1% of players 47.8% of players 47.1% of players 45.4% of players 44.7% of players 44.4% of players 41.1% of players 40.9% of players 40.8% of players 40.6% of players 37.2% of players 37.0% of players 35.8% of players 35.4% of players 35.0% of players 34.9% of players 34.8% of players 34.7% of players 34.7% of players 33.8% of players 29.3% of players 24.2% of players 18.8% of players 17.2% of players 16.0% of players 15.9% of players 15.9% of players 15.7% of players 15.2% of players 12.2% of players 11.5% of players 10.6% of players 10.2% of players 9.9% of players 8.9% of players 8.9% of players 7.2% of players 7.1% of players 6.8% of players 6.7% of players 6.4% of players 6.2% of players 5.9% of players 5.8% of players 5.7% of players 5.7% of players 5.2% of players 5.0% of players 4.9% of players 4.6% of players 96.3% 0% most earned rarest
Almost everyone has
96.3%Apprentice Necromancer — Kill 10 enemies
94.9%Grave Keeper — Kill 100 enemies
91.3%Master of the Dead — Kill 1,000 enemies
Rarest badges of honor
0.8%Nexus Oblivion — Complete Soul Nexus on Apocalypse
0.9%Void Annihilation — Complete Void Sanctum on Apocalypse
0.9%Soul Torment — Complete Soul Nexus on Torment

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Sep 24, 2026
Codex Mortis 1.0 is OUT NOW! Online co-op, ten schools of magic and 31 heroes

Hi Necromancers! First of all, THANK YOU for supporting us through Early Access. Codex Mortis leaves Early Access today stronger than it has ever been, and your feedback is the reason. Thank you for e

Sep 16, 2026
Patch Notes: Widescreen and On-Screen Controls

Hi everyone! More fixes and improvements ahead of the 1.0 release on September 24, 2026 at 10:00 AM PST. Desert textures update: the game now fills ultrawide displays properly instead of stretching or

Sep 15, 2026
Patch Notes: Fixes and Balance

Hi everyone! This update collects fixes and balance changes for the last Early Access patch, the one that brought the deckbuilder and the isometric view. Most of it comes from your reports, so thank y

Sep 10, 2026
New Update Is Live, and Codex Mortis Full Release Arrives 09.24.2026

Hi Necromancers! This is the last Early Access update for Codex Mortis. It is live today, and the full 1.0 release follows on September 24, 2026 at 10:00 AM PST . We prepared a short teaser that shows

Sep 02, 2026
Full Release Is Close, Codex Mortis Is 20% Off!

Hi Necromancers! Full release is getting close, so if you have been waiting to pick up Codex Mortis, we started a 20% off sale today. What is coming in the full release: Every map is isometric now We

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

GenresAction, Indie, RPG
Player tagsBullet Hell · Roguelite · Online Co-Op · Action Roguelike · Action · Local Co-Op · RPG · 2D · Pixel Graphics · Dark Fantasy · Loot · Score Attack (Steam store community voting)
FeaturesSingle-player · Multi-player · Co-op · Online Co-op · Shared/Split Screen Co-op · Shared/Split Screen · Steam Achievements · Full controller support
LanguagesEnglish, French, Italian, German, Spanish - Spain, Bulgarian, Simplified Chinese, Czech, Danish, Finnish, Greek, Spanish - Latin America, Dutch, Indonesian, Japanese, Korean, Norwegian, Polish, Portuguese - Portugal, Por…
ControllerFull support
Achievements92
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 11 Processor: Intel Core i3-2100 / AMD FX-4300 Memory: 4 GB RAM Graphics: NVIDIA GeForce GTX 650 / AMD Radeon HD 7750 / Intel HD Graphics 4000 / 1 GB VRAM Storage: 140 MB available space Sound Card: Any