Games like Reap
Games like Reap include Banana, Bongo Cat, Russian Life Simulator, Cookie Clicker, and Idle Champions of the Forgotten Realms. We matched them by the tags players give Reap on Steam (Casual, Incremental, 2D, Memes, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Banana
Shared: Incremental · Casual · 2D

Bongo Cat
Shared: Free to Play · Casual · 2D

Russian Life Simulator
Shared: Incremental · Memes · 2D

Cookie Clicker
Shared: Incremental · Casual · 2D

Idle Champions of the Forgotten Realms
Shared: Incremental · Free to Play · Singleplayer

To The Core
Shared: Casual · Incremental · 2D

Shelldiver
Shared: Casual · Incremental · 2D

My Name is Mayo
Shared: Incremental · Casual · Memes

Oik
Shared: Casual · Incremental · 2D

Space Rock Breaker
Shared: Casual · Incremental · Singleplayer

Keep on Mining!
Shared: Incremental · Casual · Singleplayer

VRChat
Shared: Free to Play · Memes · Casual

Nodebuster
Shared: Casual · Incremental · 2D

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

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

Timberman
Shared: Casual · 2D · Singleplayer

Montaro
Shared: Casual · Memes · 2D