Single-player games like Vacant Kingdom
Below are 12 single-player Steam games similar to Vacant Kingdom, 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 Vacant Kingdom page.
Ranked picks
- 1

MechCrisis
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Adventure with Vacant Kingdom.
Is there any way we can protect ourselves from intelligent machines? Choose your weapon, choose your exclusive character, upgrade your skills, and enjoy 15 minutes of pigeon experience.
- 2

Earl vs. the Mutants
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Adventure with Vacant Kingdom.
Save humanity in a mutant-ridden apocalypse! Dive headfirst into Earl vs. the Mutants, a high-octane top-down survival action-roguelite set in the aftermath of a nuclear apocalypse.
- 3

Patch Quest
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Vacant Kingdom.
In a labyrinth surrounded by vicious monsters, Explorers must rely on their Lasso to survive! Capture and tame ANY monster to leap, glide, surf, tunnel and websling through a treacherous, patchwork maze. This roguelike/metroidvania seems cute, but it’s a deceptively difficult bullet-hell challenge!
- 4

Killsquad
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Vacant Kingdom.
Hack and slash? Check. Twin-stick-shooter? Check. 4 player coop to slay hordes of aliens & bosses with your friends? Check. Skills, upgrades, weapons, gears, talismans and more to make you stronger? Check. Wake up, bounty hunter. We have a mission for you. Time to clean up the scum of the galaxy.
- 5

X Invader
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Vacant Kingdom.
X Invader is an action roguelite where you hack into big corporations' servers. Use add-ons from fellow hackers to defeat monsters. Powerful, cute bosses guard these servers!
- 6

State of Anarchy: Master of Mayhem
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Vacant Kingdom.
Prepare for bullet hell action and crazy driving! Your town is on fire, anarchy reigns the streets, aliens rampage in the sky! Grab your gun and join the fun!
- 7

Minishoot' Adventures
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Adventure with Vacant Kingdom.
Fly into a charming handcrafted world and go on an adventure that mixes up open exploration with crispy twin-stick shooter action. Fight your way from the shiny overworld to the deepest caves, improve your ship and overcome the dungeons' bosses to rescue your friends!
- 8

Sharded World
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Vacant Kingdom.
Sharded World is a reversed bullet hell, rogue-lite, ARPG game combining simple gameplay and great rpg progression. Each level has its own unique features and challenges. Upgradable characters, weapons and orbs. Challenges, daily quests, and leaderboards. Fight, get stronger and defeat the Lich!
- 9

Undertale
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Indie and RPG with Vacant Kingdom.
UNDERTALE! The RPG game where you don't have to destroy anyone.
- 10

Rabi-Ribi
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action and Indie with Vacant Kingdom.
Dodge bullets, missiles and lasers in battle as you wrap your head around that bunny girl costume! Combo away with your mighty Piko Hammer or spam various spells from afar with your fiery fairy friend. Explore and explode through Rabi-Rabi Island as you collect power-ups and uncover secrets...
- 11

Dread Line: Metro
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action with Vacant Kingdom.
Dive into abandoned metro tunnels overrun by mutant creatures. Find valuable loot, stay quiet, and try not to get ripped to pieces.
- 12

No Fear
Single-player alternative to Vacant Kingdom — playable solo, no multiplayer required. Shares Action with Vacant Kingdom.
No Fear is a top-down arena shooter in which the player has to fight against hordes of various monsters. Challenge them using various weapons. You must survive!