Games like Flightless Classic
Games like Flightless Classic include Samsara Room, Poppy Playtime, The Mr. Rabbit Magic Show, We Were Here, and Varenje. We matched them by the tags players give Flightless Classic on Steam (Free to Play, Adventure, Indie, and Puzzle): closest matches first, and among equally close ones the better-known games.

Samsara Room
Shared: Indie · Adventure · Free to Play

Poppy Playtime
Shared: Free to Play · Puzzle · Indie

The Mr. Rabbit Magic Show
Shared: Adventure · Free to Play · Puzzle

We Were Here
Shared: Free to Play · Puzzle · Adventure

Varenje
Shared: Free to Play · Adventure · Indie

Chants of Sennaar
Shared: Adventure · Puzzle · Indie

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Puzzle

Outcore: Desktop Adventure
Shared: Adventure · Free to Play · Puzzle

Idle Champions of the Forgotten Realms
Shared: Free to Play · Adventure · Indie

The Last Campfire
Shared: Adventure · Puzzle · Indie

Where Winds Meet
Shared: Free to Play · Adventure · Indie

LIMBO
Shared: Indie · Puzzle · Adventure

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

Pikuniku
Shared: Adventure · Indie · Puzzle

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

The Room Three
Shared: Adventure · Puzzle · Indie

Human Fall Flat
Shared: Puzzle · Adventure · Indie

COCOON
Shared: Adventure · Puzzle · Indie

The White Door
Shared: Adventure · Indie · Puzzle

Twelve Minutes
Shared: Adventure · Indie · Puzzle

The Room
Shared: Puzzle · Adventure · Indie

Little Nightmares
Shared: Adventure · Puzzle · Indie

Kraven Manor
Shared: Adventure · Free to Play · Indie

Tick Tock: A Tale for Two
Shared: Puzzle · Adventure · Indie