Games like Doppa
Games like Doppa include Banana, Megabonk, Shelldiver, Slime Rancher 2, and Timberman. We matched them by the tags players give Doppa on Steam (Action, Casual, Singleplayer, 3D, and Arcade): closest matches first, and among equally close ones the better-known games.

Banana
Shared: Singleplayer · Casual · Incremental

Megabonk
Shared: Action · Singleplayer · Survival

Shelldiver
Shared: Casual · Arcade · Incremental

Slime Rancher 2
Shared: Singleplayer · Casual · Simulation

Timberman
Shared: Casual · Action · Singleplayer

Goat Simulator
Shared: Simulation · Casual · Action

Drift86
Shared: Casual · Singleplayer · Arcade

Sparkle 2 Evo
Shared: Casual · Action · Singleplayer

Russian Life Simulator
Shared: Singleplayer · Simulation · Action

House Flipper
Shared: Singleplayer · Simulation · Casual

DJMAX RESPECT V
Shared: Casual · Action · Singleplayer

Feed and Grow: Fish
Shared: Action · Simulation · Survival

Internet Cafe Simulator 2
Shared: Simulation · 3D · Singleplayer

A Dance of Fire and Ice
Shared: Singleplayer · Arcade · Casual

Superflight
Shared: Casual · Action · Singleplayer

Rise of the Tomb Raider™
Shared: Action · Singleplayer · Third Person

Disney Speedstorm
Shared: Action · Arcade · 3D

Insaniquarium Deluxe
Shared: Casual · Singleplayer · Incremental

A Game About Feeding A Black Hole
Shared: Casual · Incremental · Singleplayer

Berry Bury Berry
Shared: 3D · Singleplayer · Incremental

Passpartout: The Starving Artist
Shared: Casual · Singleplayer · Simulation

Slime Rancher
Shared: Singleplayer · Casual · Simulation

PowerWash Simulator
Shared: Casual · Simulation · 3D

Retrowave
Shared: Casual · Action · Simulation