
SimplePlanes
Snap parts together into any aircraft you can imagine, then climb into the cockpit and find out if it actually flies.
Chasing that replayable and chaotic feeling you got from SimplePlanes 2? You will find a few strong contenders among these games.
Build your own airplane, then fly it. Balance fuel, weight, speed and cargo space, take jobs hauling goods across a colorful open world, and research better parts to reach islands farther out. No danger, no timers, just you, your designs and a lot of sky. If a flying rooster with no wings works, the physics will allow it.
Replayable, Relaxing
Physics that punish a badly shaped wing and reward a good one. Hard to learn, deeply satisfying, and every plane you build is your own.
Replayable
Developed by the creator of the original Kerbal Space Program, KitHack Model Club is a physics-based model building sandbox that offers limitless freedom for you and your friends. Design, build, battle, fly (and crash!) your very own RC vehicles, or experiment with over 2,400 ready-made vehicles!
Also in Co-op · Replayable, Chaotic, Competitive
Design your own rescue boats, helicopters, subs and trains block by block, wire them up with logic and Lua, then take them out across 15,000 square kilometres of ocean to tow ships, fight fires and pull survivors from stormy seas.
Also in Co-op · Replayable, Chaotic
Build a car, boat, plane or whatever should not work, then take it across deserts, oceans and space. Trailmakers is a bright physics sandbox with a frog-rescuing campaign, rough multiplayer battles and races, made for tinkerers who like rebuilding until it finally flies.
Also in Co-op · Replayable, Chaotic, Competitive
Explore the moon of a gas giant with a bush plane. Do deliveries and challenges to unlock upgrades and more aircraft.
Replayable, Relaxing
Fly near-future jets and helicopters over a 100km battlefield where every plane is built from parts that can snap off. Dogfight, fly under radar, or end an argument with a nuclear shockwave. Deep enough for sim fans, quick enough to get airborne in minutes, and all thirteen aircraft are yours from the start.
Also in Co-op · Replayable, Chaotic, Competitive
Unleash your creativity and craft anything from flying cars to jet-powered toilets.Fair warning: there's a learning curve. But once you've got it, the sky's the limit for your creations!While active development is paused, we focus preserving the game and keeping it accessible.
Replayable, Chaotic, Relaxing
Build rockets, planes, cars and whole planets from parts you stretch, reshape and paint, then fly them with realistic physics. Automate flights with a visual programming language, run an aerospace company in career mode, or just tinker in the sandbox. Simple to start, deep enough to keep a space nerd busy for hundreds of hours.
Replayable, Relaxing
Take flight in a seaplane flight simulator through a rugged world where you are responsible for the care and maintenance of your plane. Deliver cargo between far-flung communities in a flooded landscape that challenges your piloting skills! Fix your plane and keep flying!
Replayable, Chaotic, Relaxing
Bolt together a spaceship from thousands of parts, wire up its systems, then fly it in first person to 15 strange planets. Solo or with up to four friends, every mission asks something new of your ship, and every mistake becomes a story. Build it, launch it, and find out what happens.
Also in Co-op · Replayable, Chaotic, Relaxing
Pilot flying bulldozers, rocket tanks and grappling-hook ornithopters through a physics playground where every wall, tower and silo comes apart piece by piece. Demolish 50+ campaign missions, chase high scores, or build your own wrecking machine and raze a sandbox at your own pace.
Replayable, Chaotic

Snap parts together into any aircraft you can imagine, then climb into the cockpit and find out if it actually flies.

Design aircraft from scratch, haul cargo across a bright open world, and tinker until even the strangest designs take flight.

Developed by the creator of the original Kerbal Space Program, KitHack Model Club is a physics-based model building sandbox that offers limitless…

Snap parts together into whatever vehicle you fancy, then race, battle and explore across a bright open world with friends.

SimplePlanes VR is a flight sim with an ever-expanding collection of hand-crafted aircraft to download and fly for free.

Explore the moon of a gas giant with a bush plane. Do deliveries and challenges to unlock upgrades and more aircraft.

Take flight in a seaplane flight simulator through a rugged world where you are responsible for the care and maintenance of your plane.

Unleash your creativity and craft anything from flying cars to jet-powered toilets.Fair warning: there's a learning curve.

Assemble a ship from thousands of parts, wire its systems together, and take it to fifteen strange planets, alone or with friends.

Assemble rockets from real parts and take them from the launch pad to the far reaches of the Solar System, one failure at a time.

Snap motors, gears and springs into cars, cranes or walking contraptions, then take them for a spin and watch physics do its worst.

Create, Collect, and Crash in Autocraft, a physics destruction sandbox. Create your own cars, rockets, tanks, planes, boats, and more.

Assemble a ship from thousands of parts, wire its systems together, and take it to fifteen strange planets, alone or with friends.

Explore the moon of a gas giant with a bush plane. Do deliveries and challenges to unlock upgrades and more aircraft.

Take flight in a seaplane flight simulator through a rugged world where you are responsible for the care and maintenance of your plane.

Drive absurdly overbuilt machines through a physics playground where buildings crumble into flying debris, then do it all again for a better score.

Design aircraft from scratch, haul cargo across a bright open world, and tinker until even the strangest designs take flight.

Snap motors, gears and springs into cars, cranes or walking contraptions, then take them for a spin and watch physics do its worst.

Design your own aircraft from scratch, test it in flight, and see how well your engineering holds up.

Build rockets, planes, cars and whole planets from parts you stretch, reshape and paint, then fly them with realistic physics.

Take off in minutes, fly low to stay off the radar, and settle it with a nuclear shockwave if you have to.

Developed by the creator of the original Kerbal Space Program, KitHack Model Club is a physics-based model building sandbox that offers limitless…

Welcome to the Sandbox World! Here, you bring your ideas to life: create tanks, airplanes, ships, and anything else – with over 120 unique blocks at…

Fly a stylized Cold War jet in dogfights, strike missions and a strategic war you can shape.

Take off anywhere on the planet and fly through real-time weather, at whatever pace suits you.

Build your own car from blocks, engines and gears, then find out if it actually drives.

Assemble a ship from thousands of parts, wire its systems together, and take it to fifteen strange planets, alone or with friends.

Take flight in a seaplane flight simulator through a rugged world where you are responsible for the care and maintenance of your plane.

Set up absurd stunts, launch ragdolls down the course and watch the chaos unfold, one more go at a time.

Explore the moon of a gas giant with a bush plane. Do deliveries and challenges to unlock upgrades and more aircraft.

Assemble wobbly machines from over 100 parts and deliver awkward cargo across a bright, low-pressure Mars, alone or with friends.

Design aircraft from scratch, haul cargo across a bright open world, and tinker until even the strangest designs take flight.

A casual airline management game set on Earth and Mars. Supports singleplayer and Steam co-op.

Welcome to the Sandbox World! Here, you bring your ideas to life: create tanks, airplanes, ships, and anything else – with over 120 unique blocks at…

Developed by the creator of the original Kerbal Space Program, KitHack Model Club is a physics-based model building sandbox that offers limitless…

Archean is a first-person engineering sandbox where physics does the judging.