Games like Stella Supernova: The Astral Vale
Games like Stella Supernova: The Astral Vale include Broforce, Brawlhalla, Gal Guardians: Demon Purge, NARUTO SHIPPUDEN: Ultimate Ninja STORM 4, and ICEY. We matched them by the tags players give Stella Supernova: The Astral Vale on Steam (Action, 2D Platformer, Local Multiplayer, Adventure, and Co-op Campaign): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · Local Co-Op · Local Multiplayer

Brawlhalla
Shared: 2D Platformer · Local Multiplayer · Action

Gal Guardians: Demon Purge
Shared: Action · 2D Platformer · Adventure

NARUTO SHIPPUDEN: Ultimate Ninja STORM 4
Shared: Action · Anime · Adventure

ICEY
Shared: Action · Adventure · Anime

SANABI
Shared: Action · 2D Platformer · Adventure

Bloody Trapland
Shared: Local Multiplayer · Local Co-Op · Adventure

Bread & Fred
Shared: 2D Platformer · Cute · Local Co-Op

Bloodstained: Ritual of the Night
Shared: Action · Adventure · RPG

Celeste
Shared: 2D Platformer · Platformer · Adventure

Planet of Lana
Shared: Action · 2D Platformer · Adventure

It Takes Two
Shared: Adventure · Local Co-Op · Local Multiplayer

Dust: An Elysian Tail
Shared: Action · Adventure · RPG

Trine 5: A Clockwork Conspiracy
Shared: Action · Adventure · 2D Platformer

Castle Crashers®
Shared: Adventure · 2D · Action

Rayman® Legends
Shared: Action · Adventure · Platformer

DRAGON BALL Z: KAKAROT
Shared: Action · RPG · Anime

Juicy Realm
Shared: Action · Adventure · Local Multiplayer

Dungeon Munchies
Shared: Action · Adventure · RPG

Webbed
Shared: 2D Platformer · Cute · Action

Sonic Superstars
Shared: Action · 2D Platformer · Adventure

Gang Beasts
Shared: Action · Local Multiplayer · Multiplayer

Lovers in a Dangerous Spacetime
Shared: Local Multiplayer · Action · Co-op Campaign

Duck Game
Shared: Local Multiplayer · Action · Multiplayer