Games like Space Prison
Games like Space Prison include Mewgenics, STAR WARS Zero Company™, XCOM 2, TRIANGLE STRATEGY, and Super Robot Wars 30. We matched them by the tags players give Space Prison on Steam (Turn-Based Tactics, Comic Book, Strategy RPG, RPG, and Sci-fi): closest matches first, and among equally close ones the better-known games.

Mewgenics
Shared: Turn-Based Tactics · RPG · Roguelite

STAR WARS Zero Company™
Shared: Turn-Based Tactics · Sci-fi · Strategy

XCOM 2
Shared: Turn-Based Tactics · RPG · Sci-fi

TRIANGLE STRATEGY
Shared: Turn-Based Tactics · Strategy RPG · RPG

Super Robot Wars 30
Shared: RPG · Turn-Based Tactics · Strategy RPG

Darkest Dungeon® II
Shared: Turn-Based Tactics · Dungeon Crawler · Roguelite

Pathway
Shared: Turn-Based Tactics · Strategy RPG · RPG

MENACE
Shared: Turn-Based Tactics · RPG · Strategy

Home Behind 2
Shared: RPG · Simulation · Strategy

The Last Spell
Shared: Turn-Based Tactics · RPG · Strategy RPG

Limbus Company
Shared: Turn-Based Tactics · RPG · Strategy RPG

Battle Brothers
Shared: Turn-Based Tactics · RPG · Strategy

觅长生
Shared: RPG · Strategy · Strategy RPG

Warhammer 40,000: Mechanicus
Shared: Turn-Based Tactics · Sci-fi · Strategy

60 Seconds! Reatomized
Shared: Turn-Based Tactics · Exploration · Dark Humor

King Arthur: Knight's Tale
Shared: Turn-Based Tactics · RPG · Grid-Based Movement

Darkest Dungeon®
Shared: RPG · Dungeon Crawler · Turn-Based Combat

Xenonauts 2
Shared: Turn-Based Tactics · RPG · Sci-fi

Black Book
Shared: Turn-Based Tactics · RPG · Strategy RPG

Prime of Flames
Shared: RPG · Turn-Based Tactics · Strategy RPG

Warhammer 40,000: Chaos Gate - Daemonhunters
Shared: Turn-Based Tactics · Strategy RPG · Strategy

Stellaris
Shared: Sci-fi · Exploration · Simulation

Inkbound
Shared: Turn-Based Tactics · Strategy RPG · Roguelite

Fell Seal: Arbiter's Mark
Shared: Turn-Based Tactics · RPG · Strategy RPG