Games like Astraea
Games like Astraea include Hades, Hades II, Vampire Survivors, BALL x PIT, and Halls of Torment. We matched them by the tags players give Astraea on Steam (Action, Arcade, Shoot 'Em Up, Pixel Graphics, and Action Roguelike): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Action · Mythology

Hades II
Shared: Action · Action Roguelike · Mythology

Vampire Survivors
Shared: Action Roguelike · Pixel Graphics · Arcade

BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up

Halls of Torment
Shared: Action Roguelike · Pixel Graphics · Action

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · Action Roguelike

Black Myth: Wukong
Shared: Action · Mythology · RPG

Megabonk
Shared: Action Roguelike · Action · Arcade

Nova Drift
Shared: Shoot 'Em Up · Arcade · Action Roguelike

Downwell
Shared: Pixel Graphics · Action Roguelike · Arcade

ZeroRanger
Shared: Shoot 'Em Up · Action · Arcade

Risk of Rain (2013)
Shared: Action · Action Roguelike · Pixel Graphics

LUFTRAUSERS
Shared: Arcade · Action · Pixel Graphics

Rogue Legacy
Shared: Action · Action Roguelike · Pixel Graphics

Cyberhunt
Shared: Action · Shoot 'Em Up · Arcade

God of War
Shared: Action · Mythology · Story Rich

Talented
Shared: Pixel Graphics · Action Roguelike · Shoot 'Em Up

UBERMOSH
Shared: Action · Pixel Graphics · Arcade

UnderMine
Shared: Action Roguelike · Pixel Graphics · Action

Dungreed
Shared: Pixel Graphics · Action · Action Roguelike

Death Must Die
Shared: Action Roguelike · Pixel Graphics · Action

Katana ZERO
Shared: Action · Pixel Graphics · Story Rich

UBERMOSH:BLACK
Shared: Action · Arcade · Action Roguelike

Streets of Rogue
Shared: Pixel Graphics · Action Roguelike · Action