Games like Pirate treasure
Games like Pirate treasure include Moncage, Chants of Sennaar, Gorogoa, Sizeable, and A Dance of Fire and Ice. We matched them by the tags players give Pirate treasure on Steam (Casual, Arcade, Puzzle, 3D, and Colorful): closest matches first, and among equally close ones the better-known games.

Moncage
Shared: Casual · Puzzle · Singleplayer

Chants of Sennaar
Shared: Puzzle · Colorful · Singleplayer

Gorogoa
Shared: Puzzle · Casual · Indie

Sizeable
Shared: Casual · Puzzle · 3D

A Dance of Fire and Ice
Shared: Arcade · Singleplayer · Indie

Assemble with Care
Shared: Casual · Puzzle · Indie

The Witness
Shared: Puzzle · Colorful · Singleplayer

Peggle Deluxe
Shared: Casual · Arcade · Puzzle

AudioSurf
Shared: Casual · Arcade · Indie

hololive Treasure Mountain
Shared: Casual · Arcade · Puzzle

The Room
Shared: Puzzle · Atmospheric · Singleplayer

Little Inferno
Shared: Casual · Puzzle · Indie

Flower
Shared: Casual · Atmospheric · Colorful

Zuma Deluxe
Shared: Arcade · Puzzle · Casual

Zuma's Revenge!
Shared: Casual · Puzzle · Arcade

Is This Seat Taken?
Shared: Casual · Puzzle · Colorful

Morphopolis
Shared: Puzzle · Casual · Indie

Bejeweled® 3
Shared: Casual · Puzzle · Singleplayer

Glass Masquerade
Shared: Casual · Puzzle · Atmospheric

Donut County
Shared: Casual · Puzzle · Indie

Tetris® Effect: Connected
Shared: Puzzle · Arcade · Singleplayer

Boxes: Lost Fragments
Shared: Puzzle · Casual · 3D

ISLANDERS
Shared: Puzzle · Indie · Singleplayer

Waveform
Shared: Puzzle · Casual · Arcade