Games like Antro
Games like Antro include HAAK, Trine 2: Complete Story, INSIDE, Trine Enchanted Edition, and FAR: Changing Tides. We matched them by the tags players give Antro on Steam (Side Scroller, 2D Platformer, Rhythm, Puzzle Platformer, and Platformer): closest matches first, and among equally close ones the better-known games.

HAAK
Shared: Puzzle Platformer · Platformer · Post-apocalyptic

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

INSIDE
Shared: Puzzle Platformer · 2.5D · 2D Platformer

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

FAR: Changing Tides
Shared: Puzzle Platformer · Action-Adventure · 2.5D

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Platformer

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

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

The Pedestrian
Shared: Side Scroller · Puzzle Platformer · 2D Platformer

Deadlight
Shared: Platformer · Side Scroller · Post-apocalyptic

LIMBO
Shared: Puzzle Platformer · Platformer · Side Scroller

Prince of Persia The Lost Crown
Shared: 2D Platformer · Side Scroller · Action-Adventure

Creepy Tale
Shared: Puzzle Platformer · 2D Platformer · Platformer

Mark of the Ninja
Shared: Platformer · Side Scroller · Action

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

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

Oddworld: Soulstorm Enhanced Edition
Shared: 2D Platformer · Platformer · Action-Adventure

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

Seen
Shared: Platformer · Puzzle Platformer · Indie

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

Portal 2
Shared: Platformer · Puzzle Platformer · Action-Adventure

FAR: Lone Sails
Shared: Post-apocalyptic · 2.5D · Puzzle Platformer

REPLACED
Shared: Side Scroller · 2.5D · Action-Adventure

Chained Together
Shared: Platformer · Puzzle Platformer · Adventure