Games like Tamamoji
Games like Tamamoji include Cookie Clicker, Digseum, Game Dev Tycoon, Nodebuster, and Potion Craft: Alchemist Simulator. We matched them by the tags players give Tamamoji on Steam (Casual, Incremental, Life Sim, Point & Click, and Roguelike): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Incremental · Casual · Indie

Digseum
Shared: Casual · Incremental · Management

Game Dev Tycoon
Shared: Casual · Management · Indie

Nodebuster
Shared: Casual · Incremental · 2D

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

Shelldiver
Shared: Casual · Incremental · Management

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

Russian Life Simulator
Shared: Incremental · 2D · Casual

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

Organized Inside
Shared: Casual · Point & Click · Life Sim

Mini Motorways
Shared: Casual · Minimalist · Management

60 Seconds! Reatomized
Shared: 2D · Point & Click · Casual

Youtubers Life
Shared: Life Sim · Casual · Management

Loot Loop
Shared: Casual · Incremental · Management

Mini Metro
Shared: Casual · Minimalist · Indie

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

Papers, Please
Shared: Point & Click · Indie · Simulation

Astro Prospector
Shared: Incremental · Casual · Roguelike

(the) Gnorp Apologue
Shared: Incremental · Casual · Management

Melvor Idle
Shared: Casual · 2D · Indie

Chinese Parents
Shared: Life Sim · Casual · Simulation

911 Operator
Shared: Casual · Management · Simulation

Keep on Mining!
Shared: Incremental · Casual · Indie

Stardew Valley
Shared: Life Sim · Casual · Simulation