Games like Breakthrough
Games like Breakthrough include Zup! S, Peggle Deluxe, Braid, Plants vs. Zombies GOTY Edition, and Scribblenauts Unlimited. We matched them by the tags players give Breakthrough on Steam (Casual, Puzzle, 2D Platformer, 2D, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Zup! S
Shared: Casual · Puzzle · 2D

Peggle Deluxe
Shared: Casual · Puzzle · Singleplayer

Braid
Shared: Puzzle · 2D Platformer · 2D

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

Scribblenauts Unlimited
Shared: Casual · Puzzle · Singleplayer

Zuma Deluxe
Shared: Puzzle · Casual · 2D

Purple Place - Classic Games
Shared: Casual · Puzzle · 2D

Peggle™ Nights
Shared: Casual · Puzzle · Singleplayer

Zup!
Shared: Casual · Puzzle · 2D

Gorogoa
Shared: Puzzle · Casual · Singleplayer

Hook
Shared: Casual · Puzzle · Singleplayer

RetroMaze
Shared: Casual · Puzzle · 2D

Zup! 2
Shared: Casual · Puzzle · 2D

Zup! F
Shared: Casual · Puzzle · 2D

Zup! X
Shared: Casual · Puzzle · 2D

Laughing to Die
Shared: Casual · Puzzle · 2D Platformer

Baba Is You
Shared: Puzzle · Singleplayer · 2D

Hexcells
Shared: Casual · Puzzle · Singleplayer

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

Strange Jigsaws
Shared: Casual · Puzzle · 2D

A Little to the Left
Shared: Puzzle · Casual · Singleplayer

World of Goo
Shared: Puzzle · Casual · Singleplayer

Zup! 3
Shared: Casual · Puzzle · 2D

Bejeweled® 3
Shared: Casual · Puzzle · Singleplayer