Games like The Vessel
Games like The Vessel include COCOON, Outer Wilds, The Swapper, Stray, and Deliver Us The Moon. We matched them by the tags players give The Vessel on Steam (Puzzle, Adventure, Singleplayer, Logic, and Sci-fi): closest matches first, and among equally close ones the better-known games.

COCOON
Shared: Puzzle · Adventure · Singleplayer

Outer Wilds
Shared: Adventure · Space · Puzzle

The Swapper
Shared: Puzzle · Sci-fi · Singleplayer

Stray
Shared: Adventure · Singleplayer · Puzzle

Deliver Us The Moon
Shared: Adventure · Sci-fi · Space

The Last Campfire
Shared: Puzzle · Adventure · Singleplayer

Little Nightmares
Shared: Adventure · Singleplayer · Puzzle

Portal
Shared: Puzzle · Singleplayer · Sci-fi

The Turing Test
Shared: Puzzle · Sci-fi · Adventure

Portal 2
Shared: Puzzle · Singleplayer · Puzzle Platformer

Little Nightmares II
Shared: Adventure · Puzzle · Singleplayer

Observation
Shared: Adventure · Puzzle · Sci-fi

The Talos Principle
Shared: Puzzle · Sci-fi · Singleplayer

LIMBO
Shared: Puzzle · Adventure · Puzzle Platformer

Chants of Sennaar
Shared: Puzzle · Adventure · Singleplayer

Seen
Shared: Singleplayer · Adventure · Puzzle

Half-Life 2
Shared: Singleplayer · Sci-fi · Adventure

FAR: Lone Sails
Shared: Adventure · Singleplayer · Puzzle

ROUTINE
Shared: Singleplayer · Sci-fi · Adventure

The Room
Shared: Puzzle · Singleplayer · Adventure

Brothers - A Tale of Two Sons
Shared: Adventure · Puzzle · Atmospheric

The Room Three
Shared: Puzzle · Adventure · Singleplayer

Hardspace: Shipbreaker
Shared: Sci-fi · Space · Singleplayer

Murders on the Yangtze River
Shared: Puzzle · Adventure · Logic