Games like Ascentia
Games like Ascentia include Webbed, Prince of Persia The Lost Crown, Anomaly Agent, Afterimage, and Momodora: Reverie Under The Moonlight. We matched them by the tags players give Ascentia on Steam (Side Scroller, Exploration, Choose Your Own Adventure, 2D Platformer, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Webbed
Shared: 2D Platformer · Exploration · Puzzle Platformer

Prince of Persia The Lost Crown
Shared: Exploration · Side Scroller · 2D Platformer

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

Afterimage
Shared: Side Scroller · 2D Platformer · Exploration

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Exploration

Touhou Luna Nights
Shared: Side Scroller · Exploration · Platformer

Öoo
Shared: Puzzle Platformer · 2D Platformer · Exploration

SANABI
Shared: 2D Platformer · Action · Side Scroller

Castlevania: Belmont's Curse
Shared: 2D Platformer · Platformer · Action RPG

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

ANIMAL WELL
Shared: Exploration · Puzzle Platformer · Platformer

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

Farever
Shared: Action RPG · RPG · Exploration

ANTONBLAST
Shared: 2D Platformer · Exploration · 2D

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

Dust: An Elysian Tail
Shared: Platformer · RPG · Action

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

Nocturnal
Shared: Side Scroller · Exploration · 2D Platformer

HAAK
Shared: Puzzle Platformer · Platformer · Side Scroller

Castlevania Dominus Collection
Shared: 2D Platformer · Exploration · Action RPG

Eastern Exorcist
Shared: Side Scroller · RPG · 2D

LIMBO
Shared: Puzzle Platformer · Platformer · Side Scroller

Celeste
Shared: 2D Platformer · Platformer · Indie

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