Games like Hearts United
Games like Hearts United include Persona 5 Royal, FINAL FANTASY, Chained Echoes, Persona 3 Reload, and Metaphor: ReFantazio. We matched them by the tags players give Hearts United on Steam (RPG, JRPG, Party-Based RPG, CRPG, and 2D): closest matches first, and among equally close ones the better-known games.

Persona 5 Royal
Shared: JRPG · RPG · Anime

FINAL FANTASY
Shared: RPG · JRPG · Party-Based RPG

Chained Echoes
Shared: RPG · JRPG · Pixel Graphics

Persona 3 Reload
Shared: JRPG · RPG · Party-Based RPG

Metaphor: ReFantazio
Shared: RPG · JRPG · Anime

Persona 4 Golden
Shared: JRPG · RPG · Anime

Digimon Story Time Stranger
Shared: RPG · JRPG · Party-Based RPG

OMORI
Shared: RPG · Pixel Graphics · Indie

Clair Obscur: Expedition 33
Shared: RPG · JRPG · Fantasy

FINAL FANTASY II
Shared: RPG · JRPG · Party-Based RPG

OCTOPATH TRAVELER II
Shared: RPG · JRPG · Party-Based RPG

Hyperdimension Neptunia Re;Birth1
Shared: JRPG · RPG · Anime

Eiyuden Chronicle: Hundred Heroes
Shared: RPG · JRPG · Pixel Graphics

DELTARUNE
Shared: RPG · Pixel Graphics · 2D

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

FINAL FANTASY VI
Shared: RPG · JRPG · 2D

FINAL FANTASY IV
Shared: RPG · JRPG · Party-Based RPG

DRAGON QUEST III HD-2D Remake
Shared: RPG · JRPG · Pixel Graphics

FINAL FANTASY RESONANCE
Shared: RPG · JRPG · Pixel Graphics

OCTOPATH TRAVELER 0
Shared: RPG · JRPG · Party-Based RPG

Tales of the Black Forest
Shared: RPG · Pixel Graphics · Anime

Small Saga
Shared: RPG · JRPG · Party-Based RPG

Pathfinder: Kingmaker - Enhanced Plus Edition
Shared: RPG · Party-Based RPG · CRPG

Touhou Mystia's Izakaya
Shared: RPG · Pixel Graphics · JRPG