Games like The Living Threeangle
Games like The Living Threeangle include Trine 2: Complete Story, Braid, Laughing to Die, LIMBO, and The Pedestrian. We matched them by the tags players give The Living Threeangle on Steam (Hand-drawn, Casual, Platformer, Side Scroller, and 2.5D): closest matches first, and among equally close ones the better-known games.

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

Braid
Shared: Platformer · Puzzle · Puzzle Platformer

Laughing to Die
Shared: Casual · Platformer · Hand-drawn

LIMBO
Shared: Platformer · Puzzle · Puzzle Platformer

The Pedestrian
Shared: Puzzle · Side Scroller · Platformer

INSIDE
Shared: 2.5D · Puzzle Platformer · Indie

FEZ
Shared: Platformer · Puzzle · Casual

Planet of Lana
Shared: Puzzle Platformer · Platformer · Puzzle

Thank Goodness You're Here!
Shared: Hand-drawn · Casual · Platformer

Gorogoa
Shared: Hand-drawn · Puzzle · Casual

Thomas Was Alone
Shared: Platformer · Side Scroller · 2D Platformer

Creepy Tale
Shared: Hand-drawn · Platformer · Puzzle Platformer

Portal 2
Shared: Platformer · Puzzle · Singleplayer

GRIS
Shared: Hand-drawn · Platformer · Indie

Defy Gravity Extended
Shared: Platformer · Puzzle Platformer · Puzzle

Hue
Shared: Platformer · Puzzle · Indie

Munin
Shared: Casual · Platformer · Puzzle

Toki Tori
Shared: Casual · Platformer · Puzzle

Seen
Shared: Puzzle · Indie · Platformer

Nihilumbra
Shared: Platformer · Casual · Puzzle

The Multi-Medium
Shared: Hand-drawn · Casual · Platformer

The Bridge
Shared: Hand-drawn · Puzzle Platformer · Puzzle

Pinstripe
Shared: Casual · Platformer · Indie

Hidden Folks
Shared: Casual · Hand-drawn · Puzzle