Games like Aethelgard: Galactic Guardian
Games like Aethelgard: Galactic Guardian include Fallout 4, Warframe, Black Myth: Wukong, Gothic 1 Remake, and Starfield. We matched them by the tags players give Aethelgard: Galactic Guardian on Steam (Action, RPG, Action RPG, Shooter, and Exploration): closest matches first, and among equally close ones the better-known games.

Fallout 4
Shared: RPG · Exploration · Shooter

Warframe
Shared: Action RPG · Action · RPG

Black Myth: Wukong
Shared: Action · Action RPG · RPG

Gothic 1 Remake
Shared: RPG · Action · Exploration

Starfield
Shared: RPG · Exploration · Space

Monster Hunter: World
Shared: Action · RPG · Action RPG

Fallout: New Vegas
Shared: RPG · Action · Exploration

ELDEN RING
Shared: RPG · Action RPG · Action

God of War
Shared: Action · RPG · Third Person

Cyberpunk 2077
Shared: RPG · Action · Exploration

Wuthering Waves
Shared: Action · RPG · Exploration

Hogwarts Legacy
Shared: RPG · Exploration · Action RPG

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Atmospheric · Action

DARK SOULS™ III
Shared: RPG · Exploration · Action RPG

Crimson Desert Enhanced
Shared: Action · Exploration · RPG

Starcom: Unknown Space
Shared: Exploration · Action RPG · Top-Down Shooter

The Outer Worlds 2
Shared: RPG · Action RPG · Exploration

STAR WARS Jedi: Survivor™
Shared: Action · Third Person · Exploration

Mass Effect™ Legendary Edition
Shared: RPG · Action · Action RPG

The Ascent
Shared: RPG · Action · Top-Down Shooter

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third Person

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Shooter · RPG · Exploration

Fallout 3
Shared: RPG · Exploration · Action

BioShock Infinite
Shared: Action · Shooter · RPG