Single-player games like CODEX MORTIS
Below are 8 single-player Steam games similar to CODEX MORTIS, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like CODEX MORTIS page.
Ranked picks
- 1
Sundered Soul: Chains of the Undying
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
Sundered Soul: Chains of the Undying is a fast-paced twin-stick action roguelite focused on manual aiming, dodging, and skill-based combat. Choose from 9 distinct classes with unique playstyles. Fight to break an eternal curse—where every victory is earned and every mistake is lethal.
- 2
Slimewest
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
Face off against an invasion of slimes in this 2D roguelite with pixel art graphics. Play alone or with up to 4 friends and save the city from the devouring attack of these creatures. Get your weapon ready and embark on this bang bang western style adventure. Play now and prove your mettle!
- 3
Hit The Floor
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action with CODEX MORTIS.
Eight legs, three guns, bullet heaven chaos. Play as a mobster spider in this top-down roguelike shooter, where you tri-wield weapons and stack incremental upgrades to annihilate endless enemy waves.
- 4
Dusk Hunters
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
Dusk Hunters is a dark fantasy roguelite action RPG where you battle relentless forces of darkness in brutal skill-based combat. Wield powerful abilities, craft devastating builds, and challenge ruthless bosses at the end of every run.
- 5
I'm No Demonlord
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
"I'm No Demonlord" is a Roguelike shooter bullet hell game. High freedom in mechanics leads to unique playthroughs. As a demon-possessed hero, battle enemies, grow, and unveil dark schemes. Can he accept his new role? Save "kinds" or destroy "outsiders"? Good or evil? The choice is yours.
- 6
Shardstorm
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
After the Echo's fall, her shattered sins awoke once more. Shardstorm is a deep, replayable horde-survivor ARPG. Wield seven sentient Shards, battle towering Sin bosses, and break the game with infinite weapon scaling, skill trees, and legendary loot. Survive the storm. Shape your Wrath.
- 7
Noobs Are Coming
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
YOU ARE THE FINAL BOSS. Brutal synergy arena roguelike. Pick your Final Boss character, equip boss patterns and combine tons of attacks to create unique builds. Play solo or in co-op!
- 8
INTO EVIL
Single-player alternative to CODEX MORTIS — playable solo, no multiplayer required. Shares Action and Indie with CODEX MORTIS.
Hotline Miami x Dark Souls. Greatswords, demons, miniguns; up to 4 players. You are not prepared.