Games like HappyKids
Games like HappyKids include Hidden Folks, A Little to the Left, Hidden Through Time, Scribblenauts Unlimited, and Machinarium. We matched them by the tags players give HappyKids on Steam (Family Friendly, Education, Puzzle, Casual, and Rhythm): closest matches first, and among equally close ones the better-known games.

Hidden Folks
Shared: Casual · Hidden Object · Puzzle

A Little to the Left
Shared: Puzzle · Casual · Family Friendly

Hidden Through Time
Shared: Puzzle · Casual · Hidden Object

Scribblenauts Unlimited
Shared: Puzzle · Casual · Family Friendly

Machinarium
Shared: Puzzle · 2D · Hand-drawn

Is This Seat Taken?
Shared: Puzzle · Casual · Family Friendly

Incredibox
Shared: Casual · Rhythm · Family Friendly

The Tiny Bang Story
Shared: Puzzle · Family Friendly · Casual

Peggle Deluxe
Shared: Puzzle · Casual · Family Friendly

Rocksmith® 2014 Edition REMASTERED LEARN & PLAY
Shared: Education · Rhythm · Family Friendly

Gorogoa
Shared: Puzzle · Casual · Hand-drawn

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

Lost in Play
Shared: Puzzle · 2D · Family Friendly

Zup! X
Shared: Puzzle · Casual · 2D

Zup! F
Shared: Puzzle · Casual · 2D

Hook
Shared: Puzzle · Casual · Family Friendly

Zup! S
Shared: Puzzle · Casual · 2D

Old Man's Journey
Shared: Family Friendly · Casual · Puzzle

Zup! Z
Shared: Puzzle · Casual · 2D

Storyteller
Shared: Puzzle · 2D · Point & Click

Zup! 8
Shared: Puzzle · Casual · 2D

Morphopolis
Shared: Puzzle · Casual · Hidden Object

Zup!
Shared: Puzzle · Casual · 2D

Sudocats
Shared: Casual · Puzzle · Education