Games like Geneforge 4: Rebellion
Games like Geneforge 4: Rebellion include UnderRail, Shadowrun Returns, Encased: A Sci-Fi Post-Apocalyptic RPG, Shadowrun: Hong Kong - Extended Edition, and Avernum: Escape From the Pit. We matched them by the tags players give Geneforge 4: Rebellion on Steam (RPG, Indie, Strategy, Isometric, and Turn-Based Combat): closest matches first, and among equally close ones the better-known games.

UnderRail
Shared: RPG · Isometric · Indie

Shadowrun Returns
Shared: RPG · Isometric · Indie

Encased: A Sci-Fi Post-Apocalyptic RPG
Shared: RPG · Turn-Based Combat · Strategy

Shadowrun: Hong Kong - Extended Edition
Shared: RPG · Isometric · Strategy

Avernum: Escape From the Pit
Shared: RPG · Indie · Isometric

Wasteland 2: Director's Cut
Shared: RPG · Strategy · Turn-Based

Warhammer 40,000: Rogue Trader
Shared: RPG · Strategy · CRPG

XCOM 2
Shared: Strategy · RPG · Turn-Based Combat

Divinity: Original Sin - Enhanced Edition
Shared: RPG · Turn-Based · Strategy

Divinity: Original Sin (Classic)
Shared: RPG · Turn-Based · Strategy

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

Lords of Xulima
Shared: RPG · Indie · Turn-Based

Baldur's Gate 3
Shared: RPG · Turn-Based Combat · CRPG

Fell Seal: Arbiter's Mark
Shared: RPG · Strategy · Indie

Torment: Tides of Numenera
Shared: RPG · Isometric · Indie

Geneforge 1
Shared: RPG · Indie · Strategy

ATOM RPG: Post-apocalyptic indie game
Shared: RPG · CRPG · Turn-Based

Shadowrun: Dragonfall - Director's Cut
Shared: RPG · Isometric · Strategy

Expeditions: Conquistador
Shared: RPG · Strategy · Indie

For The King
Shared: RPG · Strategy · Turn-Based

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

Hard West
Shared: RPG · Strategy · Turn-Based Combat

Epic Battle Fantasy 5
Shared: Indie · Turn-Based · RPG

Ruined King: A League of Legends Story™
Shared: RPG · Turn-Based Combat · Indie