Games like Big Quest 2: the Adventure
Games like Big Quest 2: the Adventure include Murders on the Yangtze River, Slime Rancher, Blue Prince, OneShot, and Carto. We matched them by the tags players give Big Quest 2: the Adventure on Steam (Adventure, Dialogue Heavy, Exploration, Investigation, and Casual): closest matches first, and among equally close ones the better-known games.

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

Slime Rancher
Shared: Adventure · Exploration · Singleplayer

Blue Prince
Shared: Exploration · Investigation · Puzzle

OneShot
Shared: Story Rich · Adventure · Puzzle

Carto
Shared: Exploration · Adventure · Puzzle

Riven
Shared: Adventure · Exploration · Puzzle

Outer Wilds
Shared: Exploration · Adventure · Story Rich

Spirit of the North
Shared: Adventure · Exploration · Casual

Big Walk
Shared: Exploration · Adventure · Puzzle

DAVE THE DIVER
Shared: Adventure · Casual · Exploration

Bugsnax
Shared: Adventure · Story Rich · Exploration

Monument Valley
Shared: Adventure · Puzzle · Exploration

Chants of Sennaar
Shared: Adventure · Puzzle · Singleplayer

Outcore: Desktop Adventure
Shared: Adventure · Exploration · Story Rich

Call of the Sea
Shared: Adventure · Puzzle · Story Rich

Firewatch
Shared: Adventure · Exploration · Story Rich

A Short Hike
Shared: Adventure · Exploration · Casual

Stray
Shared: Adventure · Exploration · Singleplayer

My Little Puppy
Shared: Adventure · Story Rich · Exploration

Donut County
Shared: Casual · Adventure · Puzzle

The Forgotten City
Shared: Adventure · Exploration · Investigation

Rise of the Tomb Raider™
Shared: Adventure · Exploration · Singleplayer

Tomb Raider Game of the Year
Shared: Adventure · Exploration · Story Rich

FAR: Lone Sails
Shared: Adventure · Exploration · Singleplayer