Games like The Powder Toy on Steam
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ACTION SANDBOX
A physics sandbox game for people who like to play with digital toys. Create, control toys and define your goals.
GearBlocks
Explore a world of creative building, interactive machines, and gears - lots of gears. Build all things mechanical: cars, trucks, cranes, tanks, gearboxes, engines, clocks, anything you can think of. Test your creations to destruction in challenging scenarios, and share them in the workshop!
Sinking Simulator
The sequel to the unfinished Sinking Simulator, now with a lot more POWER!!!! Witness your witty love of chaos and destruction sinking 2D ships and everything else on board!
Demolish & Build 2017
Become a boss of Demolition & Build company. Destroy small wooden huts and huge concrete buildings. Manage your workers. Invest earned cash in your own land properties and rent them for profit in open sandbox world. Use various hand tools, buy new machines and customize their parts.
People Playground
Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.
SimpleRockets
I am excited to release my first game on Steam! SimpleRockets was released in 2013 for mobile and I've put a ton of work into it to get it ready for PC and Mac. It was inspired by KSP, and it offers a simpler 2D experience for building rockets and exploring space with realistic orbital mechanics.
Demolition Company Gold Edition
Demolition Company Gold Edition: the complete Demolition Company experience! Includes Demolition Company, the DLC Kit Pack PLUS brand new equipment, new missions and a HUGE new city district 4 times bigger than the old Demolition Company districts!
Project Highrise
Project Highrise is a skyscraper construction and management sim...
WorldBox - God Simulator
WorldBox is the ULTIMATE god simulator and sandbox game. A petri dish for your fantasy civilizations. Create your own world or destroy it using many powers. Watch civilizations grow, form kingdoms, colonize new lands, sail to far continents, wars to ignite, empires to fall and towns to burn!
Kerbal Space Program
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
Spaceflight Simulator
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
Universe Sandbox
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
Deconstruction Simulator
Deconstruction Simulator is the ultimate demolition simulator, offering you complete freedom of action and a wide array of contracts to complete. Get ready for spectacular destruction.
Regular Human Workshop
Regular Human Workshop is a 2D physics simulation sandbox. There are no predefined goals or objectives. Simply throw objects into the world and interact with them in various ways.
The Last Starship
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!
Fun with Ragdolls: The Game
Become a ragdoll and create your own environments in Sandbox Mode, explore worlds created by others, or just flop around your destructible sets! Fun with Ragdolls®: The Game lets you enjoy everything you love about ragdolls!
Mutilate-a-Doll 2
A highly customizable virtual stressball and physics sandbox about mutilating ragdolls in various ways using an overwhelming amount of weapons and tools.
Crazy Machines 3
Crazy Machines 3 is the latest, greatest, most amazing and craziest part of the series and fascinates once more with physic-based puzzles. Build your own crazy machines and share your awesomeness across the world thanks to the Steam® Workshop.
Bridge Constructor Portal
Enter the Aperture Science Enrichment Center and experience Bridge Constructor Portal – the unique merging of the classic Portal™ and Bridge Constructor™ games.
Horsey Game
Collect Horses. Breed Horses. Race Horses. Genetically Modify Horses. Create a Horse paradise or just get rich!
Miniland Adventure
The world doesn't generate itself - you do it, shape the world as you wish! Start with nothing, and build dream houses for goblins and yourself while exploring, collecting resources, crafting, building, fighting, farming... and more!
Poly Bridge
Unleash your engineering creativity with an engaging and fresh bridge-building simulator with all the bells and whistles. Enjoy hours of physics-based puzzle solving in the Campaign and then jump in the Sandbox to create your own bridge designs and puzzles!
The Sushi Spinnery
Revolutionize the revolving sushi bar in this fresh new sim!
Turbo Dismount™
Turbo Dismount is a kinetic tragedy about Mr. Dismount and the cars who love him. It is the official sequel to the wildly popular and immensely successful personal impact simulator - Stair Dismount.
RollerCoaster Tycoon® 3: Platinum
Rollercoaster Tycoon 3 Platinum combines the excitement of rollercoasters with the fun of a great strategy simulation. RCT3 Platinum combines the roller coaster theme park fun of the Roller Coaster Tycoon 3 with included expansion packs Soaked! and Wild! Now enjoy more options than ever.
Black Skylands
Become the captain of an airship and explore the world of the skies, gather resources and build powerful weapons, uncover ancient secrets and fight beneath your ship's sails.
Garry's Mod
Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.
SuchArt: Creative Space
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
Zoo Tycoon: Ultimate Animal Collection
The wildly popular Zoo Tycoon series gets set to crank up the excitement, challenge, and fun of building the ultimate zoo. Let your imagination run wild with Zoo Tycoon: Ultimate Animal Collection. Build, manage, and maintain your dream zoo alone or with up to four players.
Steam Engine Simulator
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
BeamNG.drive
A dynamic soft-body physics vehicle simulator capable of doing just about anything.
Tiny Life
In Tiny Life, you control a set of people that live together in a household. You take care of their daily needs, build their skills, forge new relationships... or just mess up their entire life in whatever way you can think of!
Graveyard Keeper
Build and manage a medieval graveyard while facing ethical dilemmas and making questionable decisions. Welcome to Graveyard Keeper, the most inaccurate medieval cemetery sim of the year.
Rover Mechanic Simulator
As an Engineer - crew member of one of the first Mars colonies - you are responsible for repairing and maintaining Mars Rovers. In this advanced simulator you will learn the internal details of various Mars Rovers and their components.