Games like Incremental Space Sandbox
Games like Incremental Space Sandbox include Universe Sandbox, SpaceEngine, PowerWash Simulator, Kerbal Space Program, and My Dream Setup. We matched them by the tags players give Incremental Space Sandbox on Steam (Casual, Simulation, Incremental, Space Sim, and Sandbox): closest matches first, and among equally close ones the better-known games.

Universe Sandbox
Shared: Simulation · Sandbox · Space Sim

SpaceEngine
Shared: Casual · Sandbox · Space Sim

PowerWash Simulator
Shared: Casual · Simulation · 3D

Kerbal Space Program
Shared: Simulation · Sandbox · Space Sim

My Dream Setup
Shared: Simulation · Casual · Sandbox

Hozy
Shared: Casual · Sandbox · Simulation

DrainSim
Shared: Casual · Simulation · Sandbox

Garry's Mod
Shared: Sandbox · Casual · Simulation

Digseum
Shared: Casual · Incremental · Simulation

Leaf it Alone
Shared: Simulation · Casual · Incremental

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Colorful

SUMMERHOUSE
Shared: Casual · Sandbox · Simulation

Berry Bury Berry
Shared: Incremental · 3D · Casual

Nodebuster
Shared: Casual · Incremental · Simulation

Townscaper
Shared: Casual · Sandbox · Simulation

Space Engineers
Shared: Sandbox · Simulation · Space

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

Planet Coaster
Shared: Simulation · Sandbox · Relaxing

PowerWash Simulator 2
Shared: Casual · Simulation · Sandbox

Placid Plastic Duck Simulator
Shared: Casual · Simulation · 3D

Spaceflight Simulator
Shared: Simulation · Space Sim · Sandbox

House Flipper
Shared: Simulation · Casual · Sandbox

X4: Foundations
Shared: Simulation · Space Sim · Sandbox

Click and Conquer
Shared: Casual · Incremental · Simulation