Games like OUTTA GAS
Games like OUTTA GAS include UnderRail, Fallout: A Post Nuclear Role Playing Game, Fallout 2: A Post Nuclear Role Playing Game, Chained Echoes, and West of Loathing. We matched them by the tags players give OUTTA GAS on Steam (RPG, Indie, Turn-Based Combat, Post-apocalyptic, and Sci-fi): closest matches first, and among equally close ones the better-known games.

UnderRail
Shared: RPG · Post-apocalyptic · Turn-Based Combat

Fallout: A Post Nuclear Role Playing Game
Shared: RPG · Post-apocalyptic · Turn-Based Combat

Fallout 2: A Post Nuclear Role Playing Game
Shared: RPG · Post-apocalyptic · Turn-Based Combat

Chained Echoes
Shared: RPG · Indie · Turn-Based Combat

West of Loathing
Shared: RPG · Comedy · Indie

Doom & Destiny
Shared: RPG · Indie · Turn-Based Combat

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

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

Swords and Souls: Neverseen
Shared: RPG · Indie · Turn-Based Combat

Undertale
Shared: RPG · Indie · Comedy

OMORI
Shared: Indie · RPG · Hand-drawn

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

South Park™: The Stick of Truth™
Shared: RPG · Comedy · Turn-Based

Fallout 4
Shared: Post-apocalyptic · RPG · Sci-fi

Yakuza: Like a Dragon
Shared: RPG · Turn-Based Combat · Turn-Based

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

The World of Kungfu: Dragon and Eagle
Shared: RPG · Indie · Turn-Based Combat

Look Outside
Shared: RPG · Turn-Based Combat · Indie

DELTARUNE
Shared: RPG · Comedy · Indie

Pit People®
Shared: Turn-Based Combat · Indie · Comedy

Cosmic Star Heroine
Shared: RPG · Indie · Sci-fi

Dungeon Munchies
Shared: Indie · RPG · Post-apocalyptic

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

Fallout: New Vegas
Shared: RPG · Post-apocalyptic · Sci-fi