CODEX MORTIS artwork$3.9981%Very Positive

CODEX MORTIS

A horde-survivor bullet hell where you play a necromancer and bring your own spell deck into the fight. You build it from ten schools of dark magic, twist it with mutations, then spend run earnings on booster packs for the next build. Solo, local co-op, or online with up to four.

Is CODEX MORTIS worth it?

CODEX MORTIS is worth it if…

  • you like survivors-likes where you plan a build before the run starts
  • you enjoy stacking spell synergies, mutations, and artifacts
  • you want fast, replayable co-op runs with up to four necromancers

Screenshots

Build the deck, then survive it

Planning happens before the horde arrives. You assemble a deck from the spells you own, then carry that loadout into an isometric battlefield full of undead. A Summoning-heavy deck crowds the field with skeletons while you cast, while Blood Magic trades your own life for harder hits.

You drop points earned during the run on booster packs, each pack widening the pool your next deck comes from. Level-ups add ability upgrades like lower cooldowns, faster projectiles, and more damage, and artifacts stack another layer of bonuses on top. With 200 spells and 31 heroes built around different school mixes, the fun is finding a combination that finally clicks.

Spells that mutate mid-run

Mutations sit on top of the skills you carry and change how they work. You fire a bone spear and it leaves in a pattern you have to relearn, or you raise a summon and get another archetype of undead instead.

Every spell belongs to one of ten schools, from Necromancy bone spears and corpse explosions to Harvest scythe work, Death Knight swordplay, Spiritism turrets and urns, and Apothecary elixirs and blight. Heroes mix them in fixed pairings.

Fourteen cursed levels and shared slaughter

Fourteen levels give each build somewhere to prove itself, from Forgotten Graveyard and Bone Cathedral to Sand Tomb and Chapel of Perpetual Bloom.

Procedurally generated worlds keep runs from repeating exactly.

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