Games like 1Second
Games like 1Second include That's not my Neighbor, Cookie Clicker, Game Dev Tycoon, Zup! S, and A Game About Feeding A Black Hole. We matched them by the tags players give 1Second on Steam (Casual, Point & Click, Incremental, 2D, and Logic): closest matches first, and among equally close ones the better-known games.

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

Cookie Clicker
Shared: Incremental · Casual · Indie

Game Dev Tycoon
Shared: Casual · Indie · 2D

Zup! S
Shared: Casual · 2D · Indie

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

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

Plants vs. Zombies GOTY Edition
Shared: Casual · Singleplayer · 2D

Hexcells
Shared: Casual · Logic · Indie

Russian Life Simulator
Shared: Incremental · 2D · Singleplayer

911 Operator
Shared: Casual · Singleplayer · Strategy

Keep on Mining!
Shared: Casual · Incremental · Singleplayer

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

Nodebuster
Shared: Casual · Incremental · 2D

Kingdom Rush Frontiers - Tower Defense
Shared: 2D · Casual · Singleplayer

There Is No Game: Wrong Dimension
Shared: Point & Click · Casual · Indie

To The Core
Shared: Casual · Incremental · 2D

Plague Inc: Evolved
Shared: Casual · Strategy · Singleplayer

Zup!
Shared: Casual · 2D · Indie

Hexcells Infinite
Shared: Casual · Logic · Indie

Timberman
Shared: Casual · 2D · Indie

Please, Don’t Touch Anything
Shared: Point & Click · Casual · Indie

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

Is This Seat Taken?
Shared: Casual · Logic · Point & Click

Baba Is You
Shared: Logic · Indie · Singleplayer