Games like Memory Cosmos
Games like Memory Cosmos include Warframe, The Sims™ 4, Where Winds Meet, Wuthering Waves, and PC Building Simulator. We matched them by the tags players give Memory Cosmos on Steam (Education, Free to Play, Text-Based, Exploration, and Third Person): closest matches first, and among equally close ones the better-known games.

Warframe
Shared: Free to Play · Third Person · Massively Multiplayer

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

Where Winds Meet
Shared: Free to Play · Singleplayer · Casual

Wuthering Waves
Shared: Free to Play · Exploration · Third Person

PC Building Simulator
Shared: Education · Simulation · 3D

Marvel Rivals
Shared: Free to Play · 3D · Casual

House Flipper
Shared: Singleplayer · Simulation · Education

Fishing Planet
Shared: Free to Play · Simulation · Massively Multiplayer

Once Human
Shared: Free to Play · Exploration · Simulation

SMITE®
Shared: Free to Play · Third Person · Simulation

Guild Wars 2®
Shared: Free to Play · Third Person · 3D

Delta Force
Shared: Free to Play · Singleplayer · Massively Multiplayer

War Thunder
Shared: Free to Play · Simulation · Massively Multiplayer

The Four Kings Casino and Slots
Shared: Free to Play · Casual · Simulation

Slime Rancher
Shared: Exploration · Singleplayer · Simulation

Internet Cafe Simulator 2
Shared: Exploration · Simulation · 3D

DAVE THE DIVER
Shared: Exploration · Casual · Singleplayer

Asphalt Legends
Shared: Free to Play · Singleplayer · Third Person

Electrician Simulator
Shared: Education · Simulation · Singleplayer

Palia
Shared: Free to Play · Exploration · Casual

Star Trek Online
Shared: Free to Play · Massively Multiplayer · Third Person

Universe Sandbox
Shared: Education · Simulation · Singleplayer

Aimlabs
Shared: Free to Play · Simulation · Education

Police Simulator: Patrol Officers
Shared: Simulation · Singleplayer · Third Person