Games like WhaleGameOnline
Games like WhaleGameOnline include Plague Inc: Evolved, Zup! S, Pikuniku, Zup!, and Braid. We matched them by the tags players give WhaleGameOnline on Steam (Puzzle, Casual, Strategy, Puzzle Platformer, and 2D): closest matches first, and among equally close ones the better-known games.

Plague Inc: Evolved
Shared: Strategy · Casual · Indie

Zup! S
Shared: Puzzle · Casual · 2D

Pikuniku
Shared: Casual · Puzzle · Cute

Zup!
Shared: Puzzle · Casual · 2D

Braid
Shared: Puzzle · Puzzle Platformer · 2D Platformer

BidKing
Shared: Casual · Strategy · Puzzle

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

Zuma Deluxe
Shared: Puzzle · Casual · Strategy

Mini Metro
Shared: Puzzle · Strategy · Casual

Zup! 3
Shared: Puzzle · Casual · 2D

Cat Goes Fishing
Shared: 2D · Casual · Cute

ShellShock Live
Shared: Strategy · 2D · Casual

Zup! F
Shared: Puzzle · Casual · 2D

Zup! 2
Shared: Puzzle · Casual · 2D

Mini Motorways
Shared: Casual · Strategy · Puzzle

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

Zup! X
Shared: Puzzle · Casual · 2D

LIMBO
Shared: Puzzle · Puzzle Platformer · 2D

Unpacking
Shared: Casual · Puzzle · Cute

Zup! 7
Shared: Puzzle · Casual · 2D

DETOUR
Shared: Puzzle · Strategy · Casual

Liars Bar
Shared: Casual · PvP · Puzzle

Webbed
Shared: Cute · 2D Platformer · Puzzle Platformer

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