Games like SEEP Universe
Games like SEEP Universe include Shovel Knight: Treasure Trove, Out There Somewhere, SANABI, Celeste, and Sonic Mania. We matched them by the tags players give SEEP Universe on Steam (Action, Adventure, Indie, Platformer, and Retro): closest matches first, and among equally close ones the better-known games.

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Retro

Out There Somewhere
Shared: Platformer · Indie · Adventure

SANABI
Shared: Action · Adventure · Indie

Celeste
Shared: Indie · Platformer · Singleplayer

Sonic Mania
Shared: Platformer · Retro · 2D

LIMBO
Shared: Indie · Platformer · Adventure

Jump King
Shared: Indie · Adventure · Action

UFO 50
Shared: Indie · Action · Retro

Skul: The Hero Slayer
Shared: Action · Indie · Platformer

Broforce
Shared: Action · Platformer · Indie

Portal 2
Shared: Platformer · Singleplayer · Puzzle

Super Meat Boy
Shared: Platformer · Indie · Singleplayer

Rogue Legacy 2
Shared: Action · Platformer · Indie

Oddworld: New 'n' Tasty
Shared: Adventure · Platformer · Action

Hollow Knight
Shared: Platformer · Indie · Singleplayer

Bloodstained: Curse of the Moon
Shared: Action · Platformer · Retro

Downwell
Shared: Indie · Platformer · Action

The Messenger
Shared: Platformer · Retro · Action

Sonic Origins
Shared: Action · Adventure · Retro

Defy Gravity Extended
Shared: Indie · Platformer · Action

Angry Video Game Nerd Adventures
Shared: Action · Indie · Platformer

Gato Roboto
Shared: Action · Indie · Adventure

MO:Astray
Shared: Action · Indie · Adventure

FEZ
Shared: Platformer · Indie · Adventure