Single-player games like Nocthra
Below are 11 single-player Steam games similar to Nocthra, 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 Nocthra page.
Ranked picks
- 1

The Universe of Death
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Hand-drawn isometric Diablo style rogue like with Elden Ring style controls, and it's also a tower defense. Level up in run to try new skills and builds, level up between runs to increase your stats to begin each run stronger. Acquire loot and give old loot to your towers and mercenaries.
- 2

Germ Swarm: Evolution & Mutation
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Fight ever-mutating bacteria and viruses, collect gene modules from fallen pathogens, evolve and strengthen your immune system, unlock a variety of medical interventions, and create powerful synergistic builds to survive an ever-escalating infection.
- 3

Hear My Cult
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Build a Cult. Command an Army. Earn the Favor of Ancient Gods. Recruit followers, summon terrifying creatures, perform forbidden rituals, and forge a different army every run in this dark fantasy roguelite.
- 4

Fortress Merge
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy with Nocthra.
Merge buildings, upgrade your defenses, and protect your fortress from endless waves of zombies. Plan each move carefully, adapt your strategy, and survive as long as you can.
- 5

Seed World
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Seed World is a game that aims to combine automation, conveyor belts, and level progression. The game simplifies automation 'construction' into a series of progress bars, with each progress producing or consuming resources, and players need to manage resources.
- 6

Pattern Survivors: Bullet Hell — Create Chaos
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
“Pattern Survivors: Bullet Hell” — a dynamic roguelike where you design your own attack patterns and defend your tower against endless waves of enemies. Upgrade, modify, and adapt your strategy in real time — can you survive the chaos of patterns?
- 7

Withering Age
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Withering Age is a real-time strategy roguelike set in a dark fantasy, medieval world brimming with magic, danger, and decay. Build and expand your kingdom, train loyal troops and mighty champions, and defend your lands against relentless hordes.
- 8

Eslabong
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Arena combat meets mercenary club management. Recruit from a dynamic market, build your squad, and compete season after season in leagues and cups.
- 9

Menace from the Deep
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Menace from the Deep is an enthralling Roguelike Deckbuilding card game that unfolds in a dark world, drawing inspiration from Howard Lovecraft and the Cthulhu Mythos.Set against the backdrop of 1920s USA, the narrative revolves around a clandestine occult society.
- 10

Cargo Protocol: Cyberpunk Trains
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Strategy and Indie with Nocthra.
Build a logistics empire in a grim cyberpunk world: lay tracks, optimize production and delivery chains, research technologies, and expand your influence. Corporations are the new gods, and the Market decides who survives.
- 11

Kill Factory
Single-player alternative to Nocthra — playable solo, no multiplayer required. Shares Indie with Nocthra.
An arena-based trap builder where defenses aren’t placed—they’re assembled from interconnected modules. Combine weapons, magnets, rotors, and elemental effects, fight with your cursor, and rebuild the factory before every new wave.