Games like Idle Immortal Sentinel
Games like Idle Immortal Sentinel include Plants vs. Zombies GOTY Edition, Kingdom Rush - Tower Defense, Bloons TD 6, Cookie Clicker, and Kingdom Rush Frontiers - Tower Defense. We matched them by the tags players give Idle Immortal Sentinel on Steam (Idler, Cyberpunk, Point & Click, Collectathon, and Tower Defense): closest matches first, and among equally close ones the better-known games.

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

Kingdom Rush - Tower Defense
Shared: Tower Defense · Strategy · Casual

Bloons TD 6
Shared: Tower Defense · Strategy · Casual

Cookie Clicker
Shared: Idler · Casual · Collectathon

Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · Strategy · 2D

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

Kingdom Rush Origins - Tower Defense
Shared: Tower Defense · Strategy · Casual

Melvor Idle
Shared: Idler · Casual · 2D

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

Kingdom Rush 5: Alliance TD
Shared: Tower Defense · Strategy · 2D

Nodebuster
Shared: Idler · Strategy · Casual

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

Keep on Mining!
Shared: Idler · Casual · Strategy

Bloons TD 5
Shared: Tower Defense · Strategy · Casual

Shelldiver
Shared: Idler · Casual · 2D

Tower Wizard
Shared: Idler · Strategy · Fantasy

Kingdom Rush Vengeance - Tower Defense
Shared: Tower Defense · Strategy · 2D

Coin Flipper
Shared: Idler · Point & Click · Collectathon

Plantera
Shared: Idler · Collectathon · Point & Click

Relic Guardian - Tower Defense
Shared: Tower Defense · Strategy · Fantasy

Digseum
Shared: Idler · Casual · Point & Click

Game Dev Tycoon
Shared: Strategy · Casual · 2D

Chef Knight
Shared: Strategy · Idler · Casual

Rogue Tower
Shared: Tower Defense · Strategy · Casual