Games like Timeline Keepers
Games like Timeline Keepers include Cookie Clicker, DAVE THE DIVER, TBH: Task Bar Hero, Banana, and Vampire Survivors. We matched them by the tags players give Timeline Keepers on Steam (Casual, Idler, Pixel Graphics, Singleplayer, and Management): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Idler · Casual · Pixel Graphics

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Management

TBH: Task Bar Hero
Shared: Idler · Pixel Graphics · Singleplayer

Banana
Shared: Casual · Singleplayer · Idler

Vampire Survivors
Shared: Pixel Graphics · Singleplayer · Casual

Papers, Please
Shared: Pixel Graphics · Indie · Singleplayer

Game Dev Tycoon
Shared: Casual · Management · Singleplayer

Dragon Cliff
Shared: Idler · Casual · Pixel Graphics

Melvor Idle
Shared: Idler · Casual · Singleplayer

Click the Button
Shared: Casual · Idler · Pixel Graphics

Digseum
Shared: Casual · Idler · Management

IdleOn - The Incremental MMO
Shared: Idler · Pixel Graphics · Management

Idle Champions of the Forgotten Realms
Shared: Idler · Singleplayer · Management

Nodebuster
Shared: Casual · Idler · Management

Tiny Pasture
Shared: Idler · Casual · Pixel Graphics

Shelldiver
Shared: Casual · Idler · Management

Timberman
Shared: Casual · Pixel Graphics · Indie

Swag and Sorcery
Shared: Pixel Graphics · Singleplayer · Management

Graveyard Keeper
Shared: Pixel Graphics · Management · Singleplayer

Unpacking
Shared: Casual · Pixel Graphics · Singleplayer

Keep on Mining!
Shared: Idler · Casual · Singleplayer

Yes, Your Grace
Shared: Pixel Graphics · Indie · Casual

Loot Loop
Shared: Casual · Idler · Management