Single-player games like Leukocyte
Below are 8 single-player Steam games similar to Leukocyte, 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 Leukocyte page.
Ranked picks
- 1

DODECIUM
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
Solo Indie delivers a local 1-4 player split-screen physics-based create and combat sandbox with scientific tools for PvP or PvE. Replay many unique campaigns. Master your hex build strategy, microscopes, and chemistry skills. Be clever to achieve victory and learn as you go. June NEXT FEST.
- 2

Crypt Crawler
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
Descend 16 monster-filled levels to close the gate to the Underworld in this top-down tower defense dungeon crawler. Gather resources, discover blueprints, and build defensive towers to slice, dice, zap, and explode undead hordes. Play solo or 2-4 player local co-op.
- 3

Cellular Sorcery
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
Explore a chaotic microscopic universe by traveling between strange cell planets and popping deadly infections with your friends or on your own. Combine upgrades in wild ways and evolve your build each run until you become the most infectious cell in the system.
- 4

Soul Chained
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
Bound by the Soul Chain, fight through purgatory as chained rival warlords using chain magic, teamwork, and terrible decision-making. Trip enemies, accidentally drag your partner to their death, and survive brutal bosses armed with suspicious amounts of jiggle physics.
- 5

Vision Quest: A New Ascent
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
Vision Quest: A New Ascent is a challenging twin-stick action-adventure shaped by nature. Master lethal combat with precise, health-restoring critical strikes. Expand your comfort-zone as you conquer mental blocks and connect with bizarre and encouraging characters. The summit is calling.
- 6

Raptor Evolution
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Adventure with Leukocyte.
Smash through environments, gather resources, and hunt grotesque human-mutants to evolve and grow stronger. Use what you collect to rebuild bridges, restore paths and push deeper into a world filled with danger and mystery.
- 7

Zupay: Shadows of Independence
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
They messed with your homeland. A violent demon saved you from death and now pushes you to get revenge. In this Hack and Slash, explore a revolutionary land, merge with the environment, and consume your enemies' fear to unleash the Zupay.
- 8

30 Days On Ship: Castaway – The First Days
Single-player alternative to Leukocyte — playable solo, no multiplayer required. Shares Action and Indie with Leukocyte.
Take on the role of a castaway on a wrecked container ship. Survive for 3 days, battle storms, hunt animals, build shelter, and maintain your hunger and thirst, attempting to endure isolation and pirates in the middle of the Pacific. Can you stay alive?