Games like Alien Kingdom
Games like Alien Kingdom include DOKA 2 KISHKI EDITION, Plebby Quest: The Crusades, Happy Room, G2 Fighter / 基因特工, and [Chillas Art] Aka Manto. We matched them by the tags players give Alien Kingdom on Steam (Indie, Casual, Action, Gore, and Violent): closest matches first, and among equally close ones the better-known games.

DOKA 2 KISHKI EDITION
Shared: Gore · Indie · Action

Plebby Quest: The Crusades
Shared: Casual · Indie · Strategy

Happy Room
Shared: Gore · Action · Violent

G2 Fighter / 基因特工
Shared: Indie · Action · Casual

[Chillas Art] Aka Manto
Shared: Indie · Gore · Action

Hotline Miami
Shared: Indie · Action · Violent

Caster
Shared: Indie · Action · Casual

Middle-earth: Shadow of War
Shared: Action · RPG · Violent

People Playground
Shared: Gore · Violent · Simulation

Ludus
Shared: Action · Indie · Simulation

OMON Simulator
Shared: Indie · Action · Simulation

Mount & Blade II: Bannerlord
Shared: Strategy · Action · RPG

Death Coming/死神来了
Shared: Casual · Gore · Strategy

CARRION
Shared: Gore · Action · Indie

Ultimate Epic Battle Simulator
Shared: Action · Simulation · Strategy

The Scroll of Taiwu : Beyond The Dome
Shared: Indie · RPG · Strategy

Home Behind
Shared: Indie · Casual · Adventure

Achievement Clicker
Shared: Casual · Indie · Action

Valakas Story
Shared: Action · Casual · Gore

Touhou Big Big Battle
Shared: Indie · Casual · Strategy

Dead Age
Shared: Strategy · Casual · RPG

Pixel Puzzles: UndeadZ
Shared: Casual · Indie · Action

Hotline Miami 2: Wrong Number
Shared: Gore · Action · Violent

Plague Inc: Evolved
Shared: Indie · Strategy · Simulation