Games like Cargo! The Quest for Gravity
Games like Cargo! The Quest for Gravity include Garry's Mod, Totally Accurate Battle Simulator, Trailmakers, Planet Coaster, and Poly Bridge. We matched them by the tags players give Cargo! The Quest for Gravity on Steam (Adventure, Physics, Family Friendly, Comedy, and Simulation): closest matches first, and among equally close ones the better-known games.

Garry's Mod
Shared: Physics · Sandbox · Building

Totally Accurate Battle Simulator
Shared: Simulation · Physics · Sandbox

Trailmakers
Shared: Family Friendly · Adventure · Action

Planet Coaster
Shared: Simulation · Family Friendly · Building

Poly Bridge
Shared: Physics · Building · Simulation

Scrap Mechanic
Shared: Building · Physics · Sandbox

Brick Rigs
Shared: Physics · Sandbox · Building

Human Fall Flat
Shared: Physics · Adventure · Puzzle

Goat Simulator
Shared: Simulation · Comedy · Physics

Fun with Ragdolls: The Game
Shared: Physics · Sandbox · Simulation

LEGO® Worlds
Shared: Adventure · Building · Family Friendly

Kerbal Space Program
Shared: Physics · Simulation · Sandbox

Space Engineers
Shared: Physics · Building · Sandbox

Wobbly Life
Shared: Adventure · Simulation · Sandbox

People Playground
Shared: Physics · Sandbox · Simulation

BONEWORKS
Shared: Physics · Adventure · Sandbox

Octodad: Dadliest Catch
Shared: Physics · Comedy · Adventure

Goat Simulator 3
Shared: Physics · Sandbox · Simulation

BeamNG.drive
Shared: Physics · Simulation · Sandbox

Bully: Scholarship Edition
Shared: Adventure · Comedy · Action

Poly Bridge 2
Shared: Physics · Building · Simulation

Bridge Constructor Portal
Shared: Physics · Simulation · Building

The Sims™ 3
Shared: Simulation · Building · Sandbox

I Am Bread
Shared: Physics · Adventure · Simulation