Games like Ready, Set, Plumb!
Games like Ready, Set, Plumb! include Zup!, LIMBO, Zup! 2, Zup! F, and Zup! S. We matched them by the tags players give Ready, Set, Plumb! on Steam (Casual, Puzzle, Puzzle Platformer, 2D, and Cartoon): closest matches first, and among equally close ones the better-known games.

Zup!
Shared: Casual · Puzzle · 2D

LIMBO
Shared: Puzzle Platformer · Puzzle · 2D

Zup! 2
Shared: Casual · Puzzle · 2D

Zup! F
Shared: Casual · Puzzle · 2D

Zup! S
Shared: Casual · Puzzle · 2D

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · 2D

Zup! X
Shared: Casual · Puzzle · 2D

Peggle Deluxe
Shared: Casual · Puzzle · 2D

Braid
Shared: Puzzle · Puzzle Platformer · 2D

Zup! 3
Shared: Casual · Puzzle · 2D

Zup! 4
Shared: Casual · Puzzle · 2D

Portal
Shared: Puzzle · Puzzle Platformer · Singleplayer

Zup! 8
Shared: Casual · Puzzle · 2D

Portal 2
Shared: Puzzle · Singleplayer · Puzzle Platformer

Creaks
Shared: Puzzle · Puzzle Platformer · 2D

Plants vs. Zombies GOTY Edition
Shared: Casual · Singleplayer · 2D

Zup! Z
Shared: Puzzle · Casual · 2D

Moncage
Shared: Casual · Puzzle · Singleplayer

Banana
Shared: Casual · 2D · Singleplayer

Scribblenauts Unlimited
Shared: Casual · Puzzle · 2D

Zup! 5
Shared: Casual · Puzzle · 2D

FEZ
Shared: Puzzle · Casual · Puzzle Platformer

Zup! 6
Shared: Casual · Puzzle · 2D

Melvor Idle
Shared: Casual · 2D · Singleplayer