Games like Highway Wars
Games like Highway Wars include Roadwarden, The Life and Suffering of Sir Brante, Fallout 4, Fallout: New Vegas, and Dungeon Munchies. We matched them by the tags players give Highway Wars on Steam (Adventure, RPG, Indie, Text-Based, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.

Roadwarden
Shared: RPG · Adventure · Text-Based

The Life and Suffering of Sir Brante
Shared: RPG · Choose Your Own Adventure · Text-Based

Fallout 4
Shared: RPG · Adventure · Post-apocalyptic

Fallout: New Vegas
Shared: RPG · Post-apocalyptic · Adventure

Dungeon Munchies
Shared: Indie · Adventure · RPG

Fallen Hero: Rebirth
Shared: Adventure · Indie · Text-Based

鬼谷八荒 Tale of Immortal
Shared: RPG · Adventure · Choose Your Own Adventure

LISA: The Painful
Shared: RPG · Indie · Post-apocalyptic

Sorcery! Parts 1 and 2
Shared: RPG · Adventure · Choose Your Own Adventure

Suzerain
Shared: Choose Your Own Adventure · Text-Based · RPG

Hero's Adventure: Road to Passion
Shared: RPG · Adventure · Indie

Wayhaven Chronicles: Book One
Shared: RPG · Adventure · Indie

SKYHILL
Shared: Adventure · Indie · Post-apocalyptic

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

Golden Treasure: The Great Green
Shared: Adventure · Indie · RPG

Tales of the Black Forest
Shared: RPG · Adventure · Indie

Sands of Salzaar
Shared: RPG · Adventure · Indie

WILL: A Wonderful World / WILL:美好世界
Shared: RPG · Adventure · Indie

Last Oasis
Shared: RPG · Adventure · Indie

Bastion
Shared: Indie · RPG · Adventure

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

To the Moon
Shared: Indie · Adventure · RPG

Melvor Idle
Shared: RPG · Indie · Adventure

Tainted Grail: The Fall of Avalon
Shared: RPG · Adventure · Indie