Games like Tapper's Fiefdom
Games like Tapper's Fiefdom include Cookie Clicker, Idle Champions of the Forgotten Realms, Nodebuster, Bills Must Be Paid, and Thronefall. We matched them by the tags players give Tapper's Fiefdom on Steam (Idler, Strategy, Incremental, City Builder, and Medieval): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Incremental · Casual

Idle Champions of the Forgotten Realms
Shared: Idler · Strategy · Incremental

Nodebuster
Shared: Incremental · Strategy · Idler

Bills Must Be Paid
Shared: Incremental · Strategy · Idler

Thronefall
Shared: Strategy · City Builder · Medieval

Dragon Cliff
Shared: Strategy · Idler · Incremental

A Game About Feeding A Black Hole
Shared: Incremental · Strategy · Idler

Firestone – Idle Clicker Online RPG
Shared: Idler · Incremental · Strategy

Hearth and Hamlet
Shared: Incremental · City Builder · Idler

Keep on Mining!
Shared: Idler · Incremental · Casual

(the) Gnorp Apologue
Shared: Idler · Incremental · Strategy

Crownhold
Shared: Idler · Incremental · Casual

Incredicer
Shared: Idler · Incremental · Strategy

Zero Stress King: Idle Defense
Shared: Idler · Strategy · Incremental

Deskrawl: Idle ARPG
Shared: Idler · Incremental · Casual

Maktala: Slime Lootfest
Shared: Idler · Incremental · Strategy

Loot Loop
Shared: Incremental · Idler · Casual

xiuzhen idle
Shared: Idler · Casual · Incremental

Shelldiver
Shared: Incremental · Idler · Casual

Tower Wizard
Shared: Idler · Incremental · Strategy

Bones and Coins
Shared: Incremental · Idler · Strategy

Banished
Shared: Strategy · City Builder · Medieval

Dorfromantik
Shared: City Builder · Strategy · Casual

Orb of Creation
Shared: Incremental · Strategy · Casual