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.

<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/189817f5c7fc3cd97c78e35ac8fc74f1.poster.avif?t=1767874807" width=600 height=200 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/189817f5c7fc3cd97c78e35ac8fc74f1.webm?t=1767874807" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/189817f5c7fc3cd97c78e35ac8fc74f1.mp4?t=1767874807" type="video/mp4"></video>Codex Mortis is a necromantic survival bullet hell where you wield the forbidden powers of death against an endless tide of the undead. Command armies, forge devastating spell combinations, and fight alongside powerful heroes—solo or in multiplayer co-op—in your quest for ultimate power.<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/0c7a467538a92c14336da389d6ef3f28.avif?t=1767874807" width=600 height=137 />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.<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/3cf38569682a3e92495013b7bb8df9e2.avif?t=1767874807" width=600 height=112 /><h2 class="bb_tag" >DEVASTATING SPELL SYNERGIES</h2>Mix and match spells across 5 schools of dark magic:<ul class="bb_ul"><li>Necromancy - Bone spears, corpse explosions, skeletal prisons</li><li>Summoning - Raise undead armies and bone golems</li><li>Blood Magic - Sacrifice life for devastating power</li><li>Soul Magic - Harvest essence, phase through enemies</li><li>Curses - Break enemy will, spread terror and confusion</li></ul>Combine spells for devastating effects. Blood Magic + Necromancy = burning explosions. Curses + Summoning = terrorized enemies trapped by undead legions.<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/542d165212e13f2d4adedc10843fabc2.avif?t=1767874807" width=600 height=220 /><h2 class="bb_tag" >THREE GAME MODES</h2>ESCAPE MODE - Race against time before the immortal Lothar hunts you downCHALLENGE MODE - Build your character, face Lothar in an epic boss fightETERNAL MODE - No time limits. Grind for heroes, artifacts, and ultimate power<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/a3cb0b4bb1c15eba5d0c5895a182da7f.poster.avif?t=1767874807" width=600 height=200 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/a3cb0b4bb1c15eba5d0c5895a182da7f.webm?t=1767874807" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/a3cb0b4bb1c15eba5d0c5895a182da7f.mp4?t=1767874807" type="video/mp4"></video><h2 class="bb_tag" >INFINITE BUILD VARIETY</h2><ul class="bb_ul"><li>Mix active spells across magic schools for unique combinations</li><li>Command Heroes with their own abilities (or play co-op with friends!)</li><li>Equip Artifacts that grant powerful bonuses</li><li>Deep progression - upgrade damage, cooldowns, health, speed, and more</li><li>Procedurally generated worlds - every run is different<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4084120/extras/effc17ac7ac5914bac9c364b3b42de69.avif?t=1767874807" width=1024 height=264 /></li></ul>

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CODEX MORTIS Achievements