Games like Deitrus
Games like Deitrus include LISA: The Painful, OMORI, Fallout: New Vegas, Clair Obscur: Expedition 33, and DELTARUNE. We matched them by the tags players give Deitrus on Steam (Grid-Based Movement, Story Rich, Party-Based RPG, Exploration, and Top-Down): closest matches first, and among equally close ones the better-known games.

LISA: The Painful
Shared: Story Rich · RPG · Post-apocalyptic

OMORI
Shared: Story Rich · Pixel Graphics · RPG

Fallout: New Vegas
Shared: Story Rich · RPG · Exploration

Clair Obscur: Expedition 33
Shared: Story Rich · RPG · Exploration

DELTARUNE
Shared: Story Rich · Pixel Graphics · RPG

Turnip Boy Commits Tax Evasion
Shared: Exploration · Top-Down · RPG

Fallout 4
Shared: Exploration · Post-apocalyptic · RPG

Undertale
Shared: Story Rich · Pixel Graphics · RPG

Impostor Factory
Shared: Story Rich · Pixel Graphics · RPG

Persona 3 Reload
Shared: Party-Based RPG · Story Rich · RPG

Finding Paradise
Shared: Story Rich · Pixel Graphics · RPG

FINAL FANTASY
Shared: Party-Based RPG · RPG · Pixel Graphics

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

Eastward
Shared: Story Rich · Pixel Graphics · RPG

Chained Echoes
Shared: RPG · Pixel Graphics · Story Rich

FINAL FANTASY RESONANCE
Shared: RPG · Pixel Graphics · Story Rich

In Stars and Time
Shared: Story Rich · RPG · Party-Based RPG

DAVE THE DIVER
Shared: Pixel Graphics · Exploration · RPG

Cassette Beasts
Shared: Party-Based RPG · Exploration · Story Rich

Solasta: Crown of the Magister
Shared: Story Rich · RPG · Top-Down

STAR WARS™ Knights of the Old Republic™
Shared: Story Rich · RPG · Party-Based RPG

Symphony of War: The Nephilim Saga
Shared: Story Rich · RPG · Turn-Based Strategy

Drova - Forsaken Kin
Shared: Exploration · RPG · Pixel Graphics

OneShot
Shared: Story Rich · Pixel Graphics · Exploration