Games like Collie Companion
Games like Collie Companion include Melvor Idle, Cookie Clicker, Plants vs. Zombies GOTY Edition, Youtubers Life, and Keep on Mining!. We matched them by the tags players give Collie Companion on Steam (Casual, Life Sim, Idler, 2D, and Family Friendly): closest matches first, and among equally close ones the better-known games.

Melvor Idle
Shared: Casual · Idler · 2D

Cookie Clicker
Shared: Idler · Casual · Indie

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

Youtubers Life
Shared: Life Sim · Casual · Singleplayer

Keep on Mining!
Shared: Casual · Idler · Singleplayer

Bloons TD 6
Shared: Casual · Singleplayer · Family Friendly

Chinese Parents
Shared: Life Sim · Casual · Singleplayer

The Sims™ 4
Shared: Life Sim · Casual · Singleplayer

Potion Craft: Alchemist Simulator
Shared: Singleplayer · 2D · Casual

Screen Cat
Shared: Casual · Life Sim · Idler

Zup! S
Shared: Casual · 2D · Indie

A Dance of Fire and Ice
Shared: 2D · Singleplayer · Indie

The Sims™ 3
Shared: Life Sim · Casual · Singleplayer

Stardew Valley
Shared: Life Sim · Casual · Indie

Game Dev Tycoon
Shared: Casual · Indie · 2D

Vampire Survivors
Shared: 2D · Casual · Singleplayer

Paralives
Shared: Life Sim · Indie · Casual

Peggle Deluxe
Shared: Casual · 2D · Singleplayer

A Game About Feeding A Black Hole
Shared: Casual · Idler · 2D

Hook
Shared: Casual · Family Friendly · Singleplayer

Golf With Your Friends
Shared: Casual · Family Friendly · Indie

Maltese's Fluffy Onsen
Shared: Casual · Idler · 2D

Russian Life Simulator
Shared: 2D · Singleplayer · Casual

Streamer Life Simulator
Shared: Life Sim · Casual · Singleplayer