Games like Sandwich +1
Games like Sandwich +1 include Shelldiver, Cookie Clicker, Keep on Mining!, Digseum, and Incredicer. We matched them by the tags players give Sandwich +1 on Steam (Idler, Incremental, Cooking, Cozy, and Casual): closest matches first, and among equally close ones the better-known games.

Shelldiver
Shared: Incremental · Casual · Idler

Cookie Clicker
Shared: Idler · Incremental · Casual

Keep on Mining!
Shared: Idler · Incremental · Casual

Digseum
Shared: Incremental · Idler · Casual

Incredicer
Shared: Idler · Incremental · Casual

Fortune Mill
Shared: Idler · Incremental · Automation

Scritchy Scratchy
Shared: Incremental · Idler · Resource Management

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

Nodebuster
Shared: Incremental · Idler · Casual

Click the Button
Shared: Incremental · Idler · Casual

Click and Conquer
Shared: Incremental · Idler · Casual

Leaf it Alone
Shared: Incremental · Relaxing · Casual

Gamblers Table
Shared: Incremental · Automation · Idler

Sludgineers
Shared: Incremental · Cozy · Relaxing

Chef Knight
Shared: Incremental · Casual · Idler

How to Train Your Cock
Shared: Idler · Casual · Cozy

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

Chillquarium
Shared: Idler · Incremental · Cozy

Tower Wizard
Shared: Idler · Incremental · Resource Management

Fishing Inc
Shared: Incremental · Casual · Idler

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

Tiny Pasture
Shared: Idler · Incremental · Casual

Fracture Field
Shared: Idler · Incremental · Casual

Bills Must Be Paid
Shared: Incremental · Idler · Relaxing