Games like Radiant Arc
Games like Radiant Arc include Persona 5 Royal, Metaphor: ReFantazio, Persona 3 Reload, Persona 4 Golden, and Chained Echoes. We matched them by the tags players give Radiant Arc on Steam (JRPG, Adventure, Indie, Turn-Based Combat, and RPG): closest matches first, and among equally close ones the better-known games.

Persona 5 Royal
Shared: JRPG · Turn-Based Combat · Story Rich

Metaphor: ReFantazio
Shared: JRPG · Turn-Based Combat · RPG

Persona 3 Reload
Shared: JRPG · RPG · Anime

Persona 4 Golden
Shared: JRPG · Turn-Based Combat · Story Rich

Chained Echoes
Shared: JRPG · RPG · Indie

Clair Obscur: Expedition 33
Shared: Turn-Based Combat · Story Rich · JRPG

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

OCTOPATH TRAVELER™
Shared: JRPG · RPG · Turn-Based Combat

Yakuza: Like a Dragon
Shared: Adventure · JRPG · RPG

Cassette Beasts
Shared: Adventure · Turn-Based Combat · JRPG

FINAL FANTASY X/X-2 HD Remaster
Shared: JRPG · Turn-Based Combat · RPG

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

OMORI
Shared: Indie · Story Rich · RPG

To the Moon
Shared: Indie · Story Rich · Adventure

The Legend of Heroes: Trails in the Sky
Shared: JRPG · RPG · Story Rich

Eiyuden Chronicle: Hundred Heroes
Shared: JRPG · RPG · Story Rich

Digimon Story Cyber Sleuth: Complete Edition
Shared: JRPG · Turn-Based Combat · RPG

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

The World of Kungfu: Dragon and Eagle
Shared: Indie · Adventure · RPG

Persona 3 Portable
Shared: JRPG · RPG · Turn-Based Combat

Wandering Sword
Shared: RPG · Adventure · Story Rich

Trails in the Sky 1st Chapter
Shared: JRPG · Adventure · RPG

沉睡的法则 Things as They Are
Shared: JRPG · Adventure · RPG

Shin Megami Tensei V: Vengeance
Shared: JRPG · RPG · Story Rich