Games like Fledge
Games like Fledge include Hollow Knight, Hollow Knight: Silksong, Öoo, Supraland, and Webbed. We matched them by the tags players give Fledge on Steam (Exploration, Metroidvania, Puzzle Platformer, 2D Platformer, and Collectathon): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Exploration

Hollow Knight: Silksong
Shared: Metroidvania · Exploration · 2D

Öoo
Shared: Metroidvania · Puzzle Platformer · Exploration

Supraland
Shared: Exploration · Puzzle Platformer · Metroidvania

Webbed
Shared: 2D Platformer · Exploration · Puzzle Platformer

ANIMAL WELL
Shared: Exploration · Metroidvania · Puzzle Platformer

Ori and the Will of the Wisps
Shared: Metroidvania · Platformer · Exploration

Thank Goodness You're Here!
Shared: Exploration · 2D Platformer · Funny

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · 2D Platformer · Exploration

Leap Year
Shared: Exploration · Puzzle Platformer · 2D Platformer

Chained Together
Shared: Platformer · Puzzle Platformer · Funny

Wuppo: Definitive Edition
Shared: Exploration · Metroidvania · 2D Platformer

Rain World
Shared: Exploration · Platformer · 2D

Owlboy
Shared: Metroidvania · Platformer · 2D

MIO: Memories in Orbit
Shared: Exploration · Metroidvania · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Funny

Dust: An Elysian Tail
Shared: Metroidvania · Platformer · 2D

F.I.S.T.: Forged In Shadow Torch
Shared: Metroidvania · Platformer · 2D Platformer

Arzette: The Jewel of Faramore
Shared: Exploration · Metroidvania · 2D Platformer

Prince of Persia The Lost Crown
Shared: Exploration · Metroidvania · 2D Platformer

Portal 2
Shared: Platformer · Puzzle Platformer · Funny

FEZ
Shared: Exploration · Platformer · Puzzle Platformer

Haiku, the Robot
Shared: Metroidvania · Exploration · Platformer

ANTONBLAST
Shared: 2D Platformer · 2D · Exploration