Games like Plastiland
Games like Plastiland include LIMBO, Portal 2, Little Nightmares, GRIS, and Planet of Lana. We matched them by the tags players give Plastiland on Steam (Casual, Indie, Adventure, Puzzle, and Singleplayer): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Indie · Puzzle · Puzzle Platformer

Portal 2
Shared: Singleplayer · Puzzle · Platformer

Little Nightmares
Shared: Adventure · Atmospheric · Singleplayer

GRIS
Shared: Indie · Atmospheric · Adventure

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Atmospheric

Pikuniku
Shared: Indie · Casual · Adventure

Pinstripe
Shared: Indie · Casual · Adventure

Seen
Shared: Indie · Adventure · Singleplayer

Nihilumbra
Shared: Indie · Adventure · Casual

FEZ
Shared: Indie · Puzzle · Platformer

Moncage
Shared: Casual · Indie · Puzzle

Gorogoa
Shared: Indie · Puzzle · Casual

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

A Story About My Uncle
Shared: Adventure · Indie · Singleplayer

The Last Campfire
Shared: Adventure · Puzzle · Indie

Little Inferno
Shared: Casual · Indie · Puzzle

FAR: Lone Sails
Shared: Adventure · Atmospheric · Singleplayer

Little Nightmares II
Shared: Adventure · Puzzle · Singleplayer

Human Fall Flat
Shared: Puzzle · Adventure · Puzzle Platformer

Unravel
Shared: Adventure · Puzzle · Singleplayer

Thank Goodness You're Here!
Shared: Adventure · Casual · Indie

INSIDE
Shared: Atmospheric · Indie · Puzzle Platformer

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

Donut County
Shared: Casual · Indie · Puzzle