Games like Qullusrent3
Games like Qullusrent3 include LIMBO, COCOON, Portal, Portal 2, and Little Nightmares. We matched them by the tags players give Qullusrent3 on Steam (Puzzle, Puzzle Platformer, Indie, 3D, and 1990's): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Puzzle Platformer · Puzzle · Indie

COCOON
Shared: Puzzle · Indie · Puzzle Platformer

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

Portal 2
Shared: Puzzle · Singleplayer · Puzzle Platformer

Little Nightmares
Shared: Puzzle Platformer · Puzzle · Singleplayer

The Last Campfire
Shared: Puzzle · Indie · Singleplayer

Braid
Shared: Puzzle · Puzzle Platformer · Indie

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · Indie

INSIDE
Shared: Puzzle Platformer · Indie · Singleplayer

Viewfinder
Shared: Puzzle · Puzzle Platformer · Singleplayer

Seen
Shared: Indie · Puzzle · Singleplayer

Firework
Shared: Puzzle · Indie · Singleplayer

FEZ
Shared: Puzzle · Indie · Singleplayer

Moncage
Shared: Puzzle · Indie · Singleplayer

Chants of Sennaar
Shared: Puzzle · Indie · Singleplayer

Little Nightmares II
Shared: Puzzle · Singleplayer · Puzzle Platformer

Baba Is You
Shared: Puzzle · Indie · Singleplayer

Murders on the Yangtze River
Shared: Puzzle · Indie · Puzzle Platformer

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Indie

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Singleplayer

Timelie
Shared: Puzzle · Puzzle Platformer · Indie

EDGE
Shared: Puzzle · Puzzle Platformer · Indie

Zup!
Shared: Puzzle · Indie · Puzzle Platformer

Papers, Please
Shared: Indie · Puzzle · Singleplayer