Games like Wasteland 3
Games like Wasteland 3 include Baldur's Gate 3, Pathfinder: Kingmaker - Enhanced Plus Edition, Warhammer 40,000: Rogue Trader, Pillars of Eternity II: Deadfire, and Wildermyth. We matched them by the tags players give Wasteland 3 on Steam (CRPG, Character Customization, Choices Matter, Story Rich, and Post-apocalyptic): closest matches first, and among equally close ones the better-known games.

Baldur's Gate 3
Shared: Character Customization · Choices Matter · RPG

Pathfinder: Kingmaker - Enhanced Plus Edition
Shared: CRPG · RPG · Character Customization

Warhammer 40,000: Rogue Trader
Shared: CRPG · Choices Matter · Character Customization

Pillars of Eternity II: Deadfire
Shared: CRPG · RPG · Story Rich

Wildermyth
Shared: Character Customization · Choices Matter · Story Rich

Baldur's Gate II: Enhanced Edition
Shared: CRPG · Story Rich · RPG

Tyranny
Shared: Choices Matter · CRPG · Story Rich

Disco Elysium - The Final Cut
Shared: Choices Matter · Story Rich · RPG

Solasta: Crown of the Magister
Shared: Character Customization · Story Rich · RPG

Shadow Gambit: The Cursed Crew
Shared: Character Customization · Choices Matter · CRPG

Colony Ship: A Post-Earth Role Playing Game
Shared: Choices Matter · CRPG · RPG

Mass Effect™ Legendary Edition
Shared: Story Rich · Choices Matter · RPG

Encased: A Sci-Fi Post-Apocalyptic RPG
Shared: CRPG · Post-apocalyptic · RPG

XCOM 2
Shared: Character Customization · RPG · Turn-Based Tactics

Dragon Age™ Inquisition
Shared: Character Customization · Choices Matter · RPG

Baldur's Gate: Enhanced Edition
Shared: CRPG · Story Rich · Character Customization

Pillars of Eternity
Shared: CRPG · RPG · Story Rich

Expeditions: Viking
Shared: Character Customization · RPG · Story Rich

Dragon Age: Origins - Ultimate Edition
Shared: Choices Matter · Story Rich · RPG

Divinity: Original Sin - Enhanced Edition
Shared: RPG · CRPG · Story Rich

GreedFall
Shared: Character Customization · RPG · Choices Matter

Fallout 2: A Post Nuclear Role Playing Game
Shared: Post-apocalyptic · RPG · Story Rich

Esoteric Ebb
Shared: Choices Matter · CRPG · Story Rich

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