Games like FLATLAND Vol.1
Games like FLATLAND Vol.1 include Celeste, Super Meat Boy, Geometry Dash, Downwell, and LIMBO. We matched them by the tags players give FLATLAND Vol.1 on Steam (Precision Platformer, Side Scroller, Difficult, Puzzle Platformer, and 2D Platformer): 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 · Difficult · Platformer
Geometry Dash
Shared: Difficult · Precision Platformer · Platformer
Downwell
Shared: Precision Platformer · 2D Platformer · Platformer
LIMBO
Shared: Puzzle Platformer · Platformer · Adventure
Rogue Legacy 2
Shared: Arcade · Platformer · Difficult
SANABI
Shared: 2D Platformer · Action · Adventure
Thomas Was Alone
Shared: Side Scroller · Precision Platformer · Platformer
VVVVVV
Shared: Precision Platformer · 2D Platformer · Difficult
Jump King
Shared: Precision Platformer · Difficult · Platformer
Will You Snail?
Shared: Precision Platformer · Difficult · 2D Platformer
Hollow Knight
Shared: Difficult · Platformer · 2D
Super Meat Boy Forever
Shared: Difficult · Precision Platformer · Platformer
Pogostuck: Rage With Your Friends
Shared: Precision Platformer · Difficult · Platformer
The End Is Nigh
Shared: Precision Platformer · Difficult · Platformer
Blasphemous 2
Shared: Difficult · Side Scroller · 2D Platformer
Braid
Shared: Puzzle Platformer · 2D Platformer · Platformer
N++ (NPLUSPLUS)
Shared: Precision Platformer · Difficult · 2D Platformer
Hollow Knight: Silksong
Shared: Difficult · Platformer · 2D
oO
Shared: Precision Platformer · Difficult · Arcade
Shovel Knight: Treasure Trove
Shared: Platformer · Difficult · Side Scroller
Webbed
Shared: 2D Platformer · Puzzle Platformer · Platformer
Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Difficult
Pizza Tower
Shared: 2D Platformer · Platformer · Indie