Games like Coin Collector
Games like Coin Collector include Refunct, Portal 2, Chained Together, A Story About My Uncle, and Slime Rancher 2. We matched them by the tags players give Coin Collector on Steam (Casual, Adventure, Action-Adventure, 3D Platformer, and Runner): closest matches first, and among equally close ones the better-known games.

Refunct
Shared: 3D Platformer · Casual · Relaxing

Portal 2
Shared: First-Person · 3D Platformer · Singleplayer

Chained Together
Shared: Adventure · Casual · 3D Platformer

A Story About My Uncle
Shared: Adventure · First-Person · 3D Platformer

Slime Rancher 2
Shared: Adventure · Relaxing · Casual

VHOLUME
Shared: 3D Platformer · Casual · Runner

PowerWash Simulator
Shared: Casual · Relaxing · 3D

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Casual · 3D Platformer

SpongeBob SquarePants: Battle for Bikini Bottom - Rehydrated
Shared: Adventure · 3D Platformer · Casual

DAVE THE DIVER
Shared: Casual · Adventure · Relaxing

Mirror's Edge™ Catalyst
Shared: Runner · 3D Platformer · Action-Adventure

Slime Rancher
Shared: Adventure · Casual · First-Person

Sonic Frontiers
Shared: Adventure · 3D Platformer · Action-Adventure

Librarian: Tidy Up the Arcane Library!
Shared: Casual · Collectathon · Relaxing

Ratchet & Clank: Rift Apart
Shared: Adventure · Action-Adventure · 3D Platformer

A Hat in Time
Shared: 3D Platformer · Collectathon · Adventure

Mirror's Edge™
Shared: Action-Adventure · 3D Platformer · First-Person

Gorilla Tag
Shared: First-Person · 3D Platformer · 3D

Placid Plastic Duck Simulator
Shared: Casual · Collectathon · Relaxing

Haste
Shared: 3D Platformer · Runner · Adventure

Indiana Jones and the Great Circle
Shared: Action-Adventure · Adventure · First-Person

Marvel’s Spider-Man Remastered
Shared: Adventure · Action-Adventure · Casual

Pumpkin Jack
Shared: Adventure · 3D Platformer · Collectathon

RV There Yet?
Shared: Adventure · Funny · First-Person