Games like The Lone Sword
Games like The Lone Sword include Trine Enchanted Edition, Trine 2: Complete Story, INSIDE, Portal 2, and SANABI. We matched them by the tags players give The Lone Sword on Steam (Action-Adventure, 2D Platformer, Puzzle Platformer, Physics, and Narrative): closest matches first, and among equally close ones the better-known games.

Trine Enchanted Edition
Shared: Action-Adventure · Puzzle Platformer · 2D Platformer

Trine 2: Complete Story
Shared: Action-Adventure · Puzzle Platformer · 2D Platformer

INSIDE
Shared: Puzzle Platformer · Indie · Singleplayer

Portal 2
Shared: Singleplayer · Puzzle Platformer · Platformer

SANABI
Shared: 2D Platformer · Action-Adventure · Action

Crimson Desert Enhanced
Shared: Singleplayer · Combat · Action-Adventure

Trine 5: A Clockwork Conspiracy
Shared: Action-Adventure · Puzzle Platformer · 2D Platformer

Planet of Lana
Shared: Puzzle Platformer · 2D Platformer · Action

Webbed
Shared: 2D Platformer · Physics · Puzzle Platformer

LIMBO
Shared: Puzzle Platformer · Indie · Platformer

Black Myth: Wukong
Shared: Action-Adventure · Combat · Action

The Bloodline
Shared: Action-Adventure · Combat · Physics

F.I.S.T.: Forged In Shadow Torch
Shared: 2D Platformer · Action-Adventure · Action

The Plucky Squire
Shared: Action-Adventure · 2D Platformer · Puzzle Platformer

STAR WARS Jedi: Survivor™
Shared: Action-Adventure · Singleplayer · Action

Dragon's Dogma 2
Shared: Singleplayer · Action-Adventure · Adventure

Trine 4: The Nightmare Prince
Shared: Puzzle Platformer · Action-Adventure · Indie

Celeste
Shared: 2D Platformer · Indie · Singleplayer

Blasphemous 2
Shared: Combat · 2D Platformer · Adventure

Half Sword
Shared: Physics · Combat · Swordplay

Marvel’s Spider-Man Remastered
Shared: Action-Adventure · Singleplayer · Combat

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

Chained Together
Shared: Puzzle Platformer · Adventure · Action-Adventure

Creepy Tale
Shared: Puzzle Platformer · 2D Platformer · Action-Adventure