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

Idle Survivor
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Action and Indie with Kill Factory.
Your ship is stranded and cannot move. Something out here has woken up, and it breeds faster than you can kill it. All you can do is upgrade your arsenal and fight back, wave after wave, for as long as you can hold.
- 2

Screen Survivors
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Casual with Kill Factory.
An idle survivor-like that sits in the corner of your screen.
- 3

Boid Predator
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Casual with Kill Factory.
The BOIDS are a plague. Build your PREDATORS to destroy them. Upgrade your PREDATORS from the spoils.
- 4

Clone. Optimize. Sacrifice.
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Casual with Kill Factory.
Build a city of science and magic, power up cloned heroes through automated dungeons, inherit their strength through cloning, and recycle the rest for science in this casual idle city-builder with deep RPG progression and competitive auto-battle leagues.
- 5

Bomb Farm
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Indie with Kill Factory.
An idle RPG where your bomber squadron gathers resources for you. Destroy rocks, hunt for rare items, forge and upgrade your equipment, master a vast skill tree, and trade items with other players on the Steam Market. Free to play.
- 6

Shoot Together
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Action and Indie with Kill Factory.
Run non-stop and blast everything in your way! SINGLE-PLAYER: Level up, fight bosses, and unlock permanent upgrades. PVP MODE: Make split-second roguelike choices mid-run to leave your friend behind and claim the top spot on the leaderboards!
- 7

Fablewood Chronicles
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Casual with Kill Factory.
Civilization, automated. Build a nation of moveable regions that runs while you work, then come back and see who took the crown while you were gone.
- 8

Journeybound Idle
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Indie and Casual with Kill Factory.
Another world needed a hero. It got you instead! A long fantasy-idle RPG: climb the adventurer's guild from F-Rank to S-Rank, max your skills, clear 114 quests, discover 1,300+ items, hire companions, farm, craft, fight, tons of QoL, a desktop widget, and lots more!
- 9

Menace from the Deep
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Indie with Kill Factory.
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

Nocthra
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Indie with Kill Factory.
Nocthra is a grim retro-style game where you play as a necromancer defending waves of attackers by raising hordes of minions from fallen enemies’ corpses. Protect your graveyard from relentless assaults, and dive into a perk system that offers endless skill combinations for infinite replayability.
- 11

Cargo Protocol: Cyberpunk Trains
Single-player alternative to Kill Factory — playable solo, no multiplayer required. Shares Indie with Kill Factory.
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.