Games like Return NULL - Episode 2
Games like Return NULL - Episode 2 include To the Moon, There Is No Game: Wrong Dimension, Hollow Knight: Silksong, Chants of Sennaar, and A Bird Story. We matched them by the tags players give Return NULL - Episode 2 on Steam (Indie, Singleplayer, Interactive Fiction, Point & Click, and Adventure): closest matches first, and among equally close ones the better-known games.

To the Moon
Shared: Great Soundtrack · Indie · Singleplayer

There Is No Game: Wrong Dimension
Shared: Indie · Point & Click · Adventure

Hollow Knight: Silksong
Shared: Indie · Great Soundtrack · Singleplayer

Chants of Sennaar
Shared: Indie · Singleplayer · Adventure

A Bird Story
Shared: Indie · Great Soundtrack · Singleplayer

Papers, Please
Shared: Indie · Singleplayer · Point & Click

GRIS
Shared: Great Soundtrack · Indie · Adventure

Hollow Knight
Shared: Great Soundtrack · Indie · Singleplayer

Deponia
Shared: Point & Click · Singleplayer · Adventure

Bastion
Shared: Indie · Great Soundtrack · Singleplayer

Broken Age
Shared: Indie · Point & Click · Adventure

OneShot
Shared: Indie · Great Soundtrack · Singleplayer

Gorogoa
Shared: Indie · Singleplayer · Point & Click

Celeste
Shared: Great Soundtrack · Indie · Singleplayer

Florence
Shared: Indie · Adventure · Singleplayer

Little Misfortune
Shared: Indie · Point & Click · Adventure

Seen
Shared: Indie · Singleplayer · Great Soundtrack

HIVESWAP: ACT 1
Shared: Great Soundtrack · Indie · Point & Click

A New Beginning: Final Cut
Shared: Indie · Singleplayer · Point & Click

Silence
Shared: Great Soundtrack · Indie · Point & Click

The Whispered World: Special Edition
Shared: Indie · Singleplayer · Point & Click

Hyper Light Drifter
Shared: Great Soundtrack · Indie · Adventure

Deponia Doomsday
Shared: Singleplayer · Point & Click · Indie

Chaos on Deponia
Shared: Singleplayer · Point & Click · Indie