Games like Shardlight
Games like Shardlight include Papers, Please, OneShot, There Is No Game: Wrong Dimension, GRIS, and Tales of the Black Forest. We matched them by the tags players give Shardlight on Steam (Adventure, Point & Click, Female Protagonist, Indie, and Post-apocalyptic): closest matches first, and among equally close ones the better-known games.

Papers, Please
Shared: Point & Click · Indie · Pixel Graphics

OneShot
Shared: Indie · Pixel Graphics · Story Rich

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

GRIS
Shared: Adventure · Indie · Female Protagonist

Tales of the Black Forest
Shared: Adventure · Pixel Graphics · Indie

Eastward
Shared: Adventure · Pixel Graphics · Singleplayer

The Rewinder
Shared: Adventure · Pixel Graphics · Point & Click

Don't Escape: 4 Days to Survive
Shared: Adventure · Point & Click · Pixel Graphics

Fran Bow
Shared: Point & Click · Adventure · Indie

Tomb Raider Game of the Year
Shared: Adventure · Female Protagonist · Singleplayer

Sally Face - Episode One
Shared: Indie · Adventure · Story Rich

The Room
Shared: Point & Click · Adventure · Singleplayer

The Room Three
Shared: Adventure · Point & Click · Indie

Unavowed
Shared: Adventure · Point & Click · Indie

Kathy Rain
Shared: Adventure · Point & Click · Female Protagonist

Rusty Lake Paradise
Shared: Point & Click · Adventure · Indie

Chants of Sennaar
Shared: Adventure · Indie · Point & Click

Servant of the Lake
Shared: Adventure · Point & Click · Indie

Rise of the Tomb Raider™
Shared: Adventure · Female Protagonist · Singleplayer

What Remains of Edith Finch
Shared: Adventure · Atmospheric · Story Rich

Finding Paradise
Shared: Adventure · Pixel Graphics · Story Rich

Gorogoa
Shared: Indie · Point & Click · Singleplayer

Primordia
Shared: Adventure · Point & Click · Post-apocalyptic

Celeste
Shared: Indie · Pixel Graphics · Female Protagonist