Games like Insect Adventure
Games like Insect Adventure include Blasphemous 2, Hollow Knight, Ori and the Will of the Wisps, ANIMAL WELL, and Owlboy. We matched them by the tags players give Insect Adventure on Steam (Hand-drawn, Pixel Graphics, Fantasy, Metroidvania, and Nonlinear): closest matches first, and among equally close ones the better-known games.

Blasphemous 2
Shared: Fantasy · Metroidvania · Pixel Graphics

Hollow Knight
Shared: Metroidvania · Platformer · Atmospheric

Ori and the Will of the Wisps
Shared: Metroidvania · Platformer · Atmospheric

ANIMAL WELL
Shared: Metroidvania · Pixel Graphics · Exploration

Owlboy
Shared: Pixel Graphics · Metroidvania · Fantasy

9 Years of Shadows
Shared: Metroidvania · Fantasy · Pixel Graphics

Rain World
Shared: Pixel Graphics · Atmospheric · Exploration

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · Pixel Graphics · 2D Platformer

Dead Cells
Shared: Metroidvania · Pixel Graphics · Hack and Slash

Skul: The Hero Slayer
Shared: Pixel Graphics · Metroidvania · Indie

Haiku, the Robot
Shared: Metroidvania · Pixel Graphics · Atmospheric

Dust: An Elysian Tail
Shared: Metroidvania · Fantasy · Platformer

Hollow Knight: Silksong
Shared: Metroidvania · Indie · Platformer

SANABI
Shared: Pixel Graphics · 2D Platformer · Action

Constance
Shared: Metroidvania · Hand-drawn · Platformer

Hyper Light Drifter
Shared: Pixel Graphics · Atmospheric · Hack and Slash

Nine Sols
Shared: Metroidvania · Hand-drawn · Platformer

Crypt Custodian
Shared: Metroidvania · Atmospheric · Exploration

Momodora: Moonlit Farewell
Shared: Pixel Graphics · Metroidvania · Action-Adventure

MIO: Memories in Orbit
Shared: Metroidvania · Atmospheric · Platformer

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

Afterimage
Shared: Metroidvania · 2D Platformer · Hack and Slash

Rabi-Ribi
Shared: Metroidvania · Pixel Graphics · Action-Adventure

Axiom Verge
Shared: Pixel Graphics · Metroidvania · Platformer