Games like Idle Tower Defense
Games like Idle Tower Defense include Nodebuster, A Game About Feeding A Black Hole, Keep on Mining!, Cookie Clicker, and Outhold. We matched them by the tags players give Idle Tower Defense on Steam (Incremental, Tower Defense, Idler, Bullet Hell, and Minimalist): closest matches first, and among equally close ones the better-known games.

Nodebuster
Shared: Incremental · Idler · Casual

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

Keep on Mining!
Shared: Incremental · Idler · Casual

Cookie Clicker
Shared: Incremental · Idler · Casual

Outhold
Shared: Incremental · Tower Defense · Minimalist

Fishing Inc
Shared: Incremental · Casual · Minimalist

Digseum
Shared: Incremental · Idler · Casual

Shelldiver
Shared: Incremental · Idler · Casual

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

Bills Must Be Paid
Shared: Incremental · Idler · Relaxing

Loot Loop
Shared: Incremental · Idler · Casual

Keep on Mining! - Worlds
Shared: Incremental · Idler · Casual

Click and Conquer
Shared: Incremental · Idler · Casual

Incredicer
Shared: Incremental · Idler · Casual

Click the Button
Shared: Incremental · Idler · Casual

Melvor Idle
Shared: Idler · Casual · Indie

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

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Casual · Strategy

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

Tower Wizard
Shared: Incremental · Idler · Colorful

Timber Rush
Shared: Idler · Incremental · Casual

Deep Space Cache
Shared: Incremental · Idler · Casual

ISLANDERS
Shared: Relaxing · Minimalist · Indie

Bloons TD 6
Shared: Tower Defense · Strategy · Casual