Games like Numina
Games like Numina include OMORI, SCARLET NEXUS, Secrets of Grindea, CrossCode, and Tales of the Black Forest. We matched them by the tags players give Numina on Steam (RPG, Indie, Adventure, Action RPG, and Character Action Game): closest matches first, and among equally close ones the better-known games.

OMORI
Shared: Indie · RPG · Adventure

SCARLET NEXUS
Shared: RPG · Action RPG · Adventure

Secrets of Grindea
Shared: Adventure · Indie · Action RPG

CrossCode
Shared: RPG · Action RPG · Indie

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

Drova - Forsaken Kin
Shared: RPG · Action RPG · Exploration

Dungeon Munchies
Shared: Indie · Adventure · RPG

Hero Siege
Shared: Action RPG · RPG · Indie

Gothic 1 Remake
Shared: RPG · Adventure · Exploration

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

Eastward
Shared: Adventure · RPG · Action RPG

Chained Echoes
Shared: RPG · Indie · JRPG

Hyper Light Drifter
Shared: Indie · Adventure · RPG

To the Moon
Shared: Indie · Adventure · RPG

Roadwarden
Shared: RPG · Adventure · Indie

Terraria
Shared: Adventure · 2D · Exploration

Finding Paradise
Shared: Adventure · RPG · 2D

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

Wolcen: Lords of Mayhem
Shared: Action RPG · RPG · Adventure

Greyfox RPG
Shared: Indie · Adventure · RPG

Pocket Mirror ~ GoldenerTraum
Shared: RPG · Adventure · 2D

Hylics
Shared: Indie · RPG · Adventure

Look Outside
Shared: RPG · Adventure · Indie

Cat Quest II
Shared: Adventure · Action RPG · RPG