Games like Synthetic Hopes
Games like Synthetic Hopes include LIMBO, Portal 2, SANABI, Planet of Lana, and ANIMAL WELL. We matched them by the tags players give Synthetic Hopes on Steam (Puzzle Platformer, Puzzle, Platformer, 2D, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

SANABI
Shared: 2D Platformer · Action · Adventure

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Action

ANIMAL WELL
Shared: Puzzle · Puzzle Platformer · Platformer

Braid
Shared: Puzzle Platformer · Puzzle · Platformer

Celeste
Shared: Platformer · 2D Platformer · 2D

Webbed
Shared: Puzzle Platformer · 2D Platformer · 2D

Out There Somewhere
Shared: Platformer · Puzzle · 2D

Öoo
Shared: Puzzle Platformer · Puzzle · 2D Platformer

FEZ
Shared: Puzzle · Platformer · Puzzle Platformer

Portal
Shared: Puzzle Platformer · Puzzle · Singleplayer

Ori and the Will of the Wisps
Shared: Platformer · Singleplayer · Adventure

Oddworld: New 'n' Tasty
Shared: Puzzle Platformer · Platformer · Puzzle

Little Nightmares
Shared: Puzzle Platformer · Adventure · Puzzle

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer

Katana ZERO
Shared: Platformer · Action · 2D Platformer

Seen
Shared: Puzzle · Adventure · Singleplayer

Unravel
Shared: Puzzle · Adventure · Action

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

Neva
Shared: Platformer · Adventure · Puzzle

INSIDE
Shared: Puzzle Platformer · Singleplayer · Puzzle

Trine 2: Complete Story
Shared: Puzzle Platformer · Platformer · Puzzle

Max: The Curse of Brotherhood
Shared: Puzzle Platformer · Platformer · Puzzle