Games like Coconut
Games like Coconut include Idle Champions of the Forgotten Realms, Cookie Clicker, To The Core, That's not my Neighbor, and Shelldiver. We matched them by the tags players give Coconut on Steam (Casual, Incremental, Point & Click, 2D, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Idle Champions of the Forgotten Realms
Shared: Incremental · Free to Play · Singleplayer

Cookie Clicker
Shared: Incremental · Casual · 2D

To The Core
Shared: Casual · Incremental · 2D

That's not my Neighbor
Shared: Casual · Point & Click · Singleplayer

Shelldiver
Shared: Casual · Incremental · 2D

Click the Button
Shared: Casual · Incremental · Point & Click

Insaniquarium Deluxe
Shared: Casual · Incremental · Singleplayer

Keep on Mining!
Shared: Incremental · Casual · Singleplayer

Space Rock Breaker
Shared: Casual · Incremental · Singleplayer

Samorost 1
Shared: Casual · Point & Click · 2D

Digseum
Shared: Casual · Incremental · Point & Click

Nodebuster
Shared: Casual · Incremental · 2D

Russian Life Simulator
Shared: Incremental · 2D · Singleplayer

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

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

Varenje
Shared: Casual · Free to Play · Point & Click

Timberman
Shared: Casual · 2D · Singleplayer

The Sims™ 4
Shared: Free to Play · Singleplayer · Casual

Game Dev Tycoon
Shared: Casual · Singleplayer · 2D

The Mr. Rabbit Magic Show
Shared: Point & Click · Free to Play · Singleplayer

There Is No Game: Wrong Dimension
Shared: Point & Click · Casual · Singleplayer

Storyteller
Shared: Point & Click · 2D · Singleplayer

Marisa!ReturnTheBook!
Shared: Casual · Incremental · 2D

Oik
Shared: Casual · Incremental · 2D