Games like 我的小鲨鱼
Games like 我的小鲨鱼 include Unpacking, NEEDY STREAMER OVERLOAD, Cookie Clicker, The Test, and Papers, Please. We matched them by the tags players give 我的小鲨鱼 on Steam (Psychological Horror, Cute, Casual, Pixel Graphics, and Free to Play): closest matches first, and among equally close ones the better-known games.

Unpacking
Shared: Cute · Casual · Pixel Graphics

NEEDY STREAMER OVERLOAD
Shared: Psychological Horror · Cute · Pixel Graphics

Cookie Clicker
Shared: Casual · Incremental · Pixel Graphics

The Test
Shared: Psychological Horror · Simulation · Pixel Graphics

Papers, Please
Shared: Pixel Graphics · Simulation · Singleplayer

OneShot
Shared: Pixel Graphics · Cute · Singleplayer

Undertale
Shared: Pixel Graphics · Multiple Endings · Singleplayer

Chinese Parents
Shared: Psychological Horror · Casual · Simulation

The Sims™ 4
Shared: Free to Play · Simulation · Casual

MiSide
Shared: Psychological Horror · Cute · Singleplayer

That's not my Neighbor
Shared: Casual · Simulation · Multiple Endings

Stardew Valley
Shared: Pixel Graphics · Simulation · Casual

Changed
Shared: Cute · Psychological Horror · Pixel Graphics

OMORI
Shared: Psychological Horror · Pixel Graphics · Multiple Endings

Buddy Simulator 1984
Shared: Psychological Horror · Pixel Graphics · Cute

KinitoPET
Shared: Psychological Horror · Multiple Endings · 2D

Sticky Business
Shared: Casual · Cute · Simulation

Milk outside a bag of milk outside a bag of milk
Shared: Psychological Horror · Pixel Graphics · Multiple Endings

Shelldiver
Shared: Casual · Incremental · Cute

DAVE THE DIVER
Shared: Pixel Graphics · Casual · Singleplayer

Emily is Away Too
Shared: Casual · Simulation · Pixel Graphics

Lobotomy Corporation | Monster Management Simulation
Shared: Psychological Horror · Simulation · Singleplayer

Tiny Pasture
Shared: Cute · Pixel Graphics · Casual

Touhou Mystia's Izakaya
Shared: Casual · Pixel Graphics · Simulation