Games like Flatland: Prologue
Games like Flatland: Prologue include Celeste, Super Meat Boy, Geometry Dash, LIMBO, and VVVVVV. We matched them by the tags players give Flatland: Prologue on Steam (Precision Platformer, Side Scroller, 2D Platformer, Puzzle Platformer, and Difficult): closest matches first, and among equally close ones the better-known games.
Celeste
Shared: Precision Platformer · Difficult · 2D Platformer
Super Meat Boy
Shared: Precision Platformer · 2D Platformer · Difficult
Geometry Dash
Shared: Difficult · Precision Platformer · 2D
LIMBO
Shared: Puzzle Platformer · Platformer · 2D
VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer
Downwell
Shared: Precision Platformer · 2D Platformer · Platformer
SANABI
Shared: 2D Platformer · Action · 2D
Thomas Was Alone
Shared: Side Scroller · Precision Platformer · 2D Platformer
Rogue Legacy 2
Shared: Platformer · Arcade · Difficult
Jump King
Shared: Precision Platformer · Difficult · Platformer
Hollow Knight
Shared: Platformer · Difficult · 2D
Shovel Knight: Treasure Trove
Shared: Platformer · Difficult · Side Scroller
Super Meat Boy Forever
Shared: Precision Platformer · Difficult · Platformer
Mark of the Ninja
Shared: Platformer · Stealth · Side Scroller
Braid
Shared: Puzzle Platformer · 2D Platformer · Platformer
Will You Snail?
Shared: Precision Platformer · Difficult · 2D Platformer
Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Difficult
The End Is Nigh
Shared: Precision Platformer · Platformer · Difficult
N++ (NPLUSPLUS)
Shared: Precision Platformer · 2D Platformer · Difficult
Dungeon Escape
Shared: Precision Platformer · 2D Platformer · Difficult
NINJA GAIDEN: Ragebound
Shared: 2D Platformer · Side Scroller · Platformer
Hollow Knight: Silksong
Shared: Difficult · Platformer · 2D
Volgarr the Viking
Shared: Difficult · Platformer · Action
Cuphead
Shared: Difficult · Platformer · 2D