Browse free open source C++ Simulation Games and projects below. Use the toggles on the left to filter open source C++ Simulation Games by OS, license, language, programming language, and project status.

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  • 1
    Rigs of Rods 0.4+

    Rigs of Rods 0.4+

    Soft-body physics simulator

    Rigs of Rods is a free/libre soft-body physics simulator mainly targeted at simulating vehicle physics. The soft-body physics system is based on mass-spring-damper theory. This is a mirror of the Rigs of Rods GitHub repository: https://github.com/RigsOfRods/rigs-of-rods The old SourceForge project can be found here: https://sourceforge.net/projects/rigsofrods/
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    Downloads: 11,713 This Week
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  • 2
    simutrans

    simutrans

    A free transportation simulator game

    Simutrans is a cross-platform simulation game where players try to successfully manage transportation systems between places by land, air, and water for passengers, mail, and goods. Planes, ships, trains, trams, trucks, buses, or monorails are at your disposal, but factories operate based on contracts and passengers can only travel to their set destinations.
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    Downloads: 3,586 This Week
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  • 3
    Stellarium

    Stellarium

    A planetarium software that shows a 3D simulation of the night sky

    Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
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    Downloads: 2,805 This Week
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  • 4
    Speed Dreams : an Open Motorsport Sim
    2025 UPDATE: we have finally moved to Git! https://forge.a-lec.org/speed-dreams/speed-dreams-code/ This SourceForge project will be kept as a read-only archive and will be eventually removed! Speed Dreams is a Motorsport Simulator featuring high-quality 3D graphics and an accurate physics engine, all targeting maximum realism. Initially forked from TORCS, it has now reached a clearly higher realism level in visual and physics simulation, thanks to its active development team and growing community. It mainly aims to implement exciting new features, cars, tracks and AI opponents to make a more enjoyable game for the player, while constantly pushing forward visual and physics realism. It is also intended for any research, study or teaching activity, around physics and AI, thanks to its GPL V2+ license, and the clear and modular architecture of its C/C++ code base.
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    Downloads: 320 This Week
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  • 5
    Stunt Rally

    Stunt Rally

    3D racing game with Sci-Fi elements and Track Editor

    ONLY for Releases. Downloads in Files. Homepage: https://cryham.org/stuntrally/ Sources, Issues, etc: https://github.com/stuntrally/stuntrally3/ Documentation: https://github.com/stuntrally/stuntrally3/blob/main/docs/_menu.md Browsers for: Vehicles: https://cryham.org/stuntrally/vehicles/ Tracks: https://cryham.org/stuntrally/tracks/
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    Downloads: 268 This Week
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  • 6
    Rigs of Rods

    Rigs of Rods

    A 3D simulator game where you can drive, fly, and sail

    Rigs of Rods is a 3D simulator game where you can drive, fly and sail various vehicles using an accurate and unique soft-body physics engine. Since 2014, the development continued at https://github.com/RigsOfRods/rigs-of-rods UPDATE: 10/30/2016: removed opencandy installers, replaced with zip files.
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    Downloads: 215 This Week
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  • 7
    AirSim

    AirSim

    A simulator for drones, cars and more, built on Unreal Engine

    AirSim is an open-source, cross platform simulator for drones, cars and more vehicles, built on Unreal Engine with an experimental Unity release in the works. It supports software-in-the-loop simulation with popular flight controllers such as PX4 & ArduPilot and hardware-in-loop with PX4 for physically and visually realistic simulations. It is developed as an Unreal plugin that can simply be dropped into any Unreal environment. AirSim's development is oriented towards the goal of creating a platform for AI research to experiment with deep learning, computer vision and reinforcement learning algorithms for autonomous vehicles. For this purpose, AirSim also exposes APIs to retrieve data and control vehicles in a platform independent way. AirSim is fully enabled for multiple vehicles. This capability allows you to create multiple vehicles easily and use APIs to control them.
    Downloads: 40 This Week
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  • 8
    VDrift
    A free racing simulator with excellent physics and graphics.
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    Downloads: 207 This Week
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  • 9
    SmartPropoPlus
    SmartPropoPlus - Turning your R/C transmitter into a Flight Simulator Joystick
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    Downloads: 194 This Week
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  • 10
    Trigger Rally

    Trigger Rally

    A fast-paced free software rally racing game

    A 3D rally simulation with a great physics engine for drifting, over 200 maps, different terrain materials like dirt, asphalt, sand, ice etc. and various weather, light and fog conditions give this rally simulation the edge over many other free games. You need to make it through the maps in often tight time limits and can further improve by beating the recorded high scores. All attached single races must be finished in time in order to win an event, unlocking additional events and cars. Most maps are equipped with spoken co-driver notes and co-driver icons. Many configuration details for display and audio adjustments can be edited in the well documented plain text configuration file. Additional contributed maps and events are ready for download as plugins. Trigger Rally works well with common low performance laptops from about 2008. And if something like snow flakes and vegetation sprites demand to much from your system you can just disable it.
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    Downloads: 99 This Week
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  • 11
    Another version of the simple action game modeled after the lightcycle sequence of the movie Tron. We're using SourceForge only for file releases and news these days. Development has moved on to GitLab: https://gitlab.com/armagetronad/armagetronad
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    Downloads: 89 This Week
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  • 12

    crrcsim

    Open source model airplane simulator

    CRRCSim is a model-airplane flight simulation program for Linux with ports to other platforms. Using CRRCSim you can learn how to fly model aircraft, test new aircraft designs, and improve your skills by practicing in the relative safety of your pc.
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    Downloads: 114 This Week
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  • 13
    TORCS - The Open Racing Car Simulator
    TORCS, The Open Racing Car Simulator is a highly portable multi platform car racing simulation. It is used as ordinary car racing game, as AI racing game and as research platform. It runs on Linux (x86, AMD64, ARM and PPC), FreeBSD, OpenSolaris and Windows.
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    Downloads: 469 This Week
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  • 14
    LinCity-NG
    LinCity-NG is a city simulation game. In the game, you are required to build and maintain a city. You can win the game either by building a sustainable economy or by evacuating all citizens with spaceships.
    Downloads: 73 This Week
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  • 15
    OpenRCT2

    OpenRCT2

    An open source re-implementation of RollerCoaster Tycoon 2

    Open source re-implementation of RollerCoaster Tycoon 2. An open-source re-implementation of RollerCoaster Tycoon 2, a construction and management simulation video game that simulates amusement park management. Chat takes place on Discord. You will need to create a Discord account if you don't yet have one. If you want to help make the game, join the developer channel.OpenRCT2 is an open-source re-implementation of RollerCoaster Tycoon 2 (RCT2). The gameplay revolves around building and maintaining an amusement park containing attractions, shops and facilities. The player must try to make a profit and maintain a good park reputation whilst keeping the guests happy. OpenRCT2 allows for both scenario and sandbox play. Scenarios require the player to complete a certain objective in a set time limit whilst sandbox allows the player to build a more flexible park with optionally no restrictions or finance. RollerCoaster Tycoon 2 was originally written by Chris Sawyer in x86 assembly.
    Downloads: 15 This Week
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  • 16
    FlightGear Mac OS X
    FlightGear Mac OS X is a Mac version of FlightGear, a multi-platform open-source flight simulator that provides very realistic flight experience on your computer. By installing a package you can fly around the world in the comfort of your own home.
    Downloads: 69 This Week
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  • 17
    StepMania
    StepMania is a music/rhythm game. The player presses different buttons in time to the music and to note patterns that scroll across the screen. Features 3D graphics, visualizations, support for gamepads/dance pads, a step recording mode, and more! WE HAVE MOVED TO GITHUB.
    Downloads: 90 This Week
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  • 18
    Bullet Physics SDK

    Bullet Physics SDK

    Real-time collision detection and multi-physics simulation for VR

    This is the official C++ source code repository of the Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc. We are developing a new differentiable simulator for robotics learning, called Tiny Differentiable Simulator, or TDS. The simulator allows for hybrid simulation with neural networks. It allows different automatic differentiation backends, for forward and reverse mode gradients. TDS can be trained using Deep Reinforcement Learning, or using Gradient based optimization (for example LFBGS). In addition, the simulator can be entirely run on CUDA for fast rollouts, in combination with Augmented Random Search. This allows for 1 million simulation steps per second. It is highly recommended to use PyBullet Python bindings for improved support for robotics, reinforcement learning and VR. Use pip install pybullet and checkout the PyBullet Quickstart Guide.
    Downloads: 11 This Week
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  • 19
    Open Dynamics Engine
    A free, industrial quality library for simulating articulated rigid body dynamics - for example ground vehicles, legged creatures, and moving objects in VR environments. It's fast, flexible & robust. Built-in collision detection.
    Downloads: 52 This Week
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  • 20
    OpenTTD is an open source clone of the Microprose game "Transport Tycoon Deluxe". For more recent versions visit our website: http://www.openttd.org
    Downloads: 50 This Week
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  • 21
    OpenTTD

    OpenTTD

    Open source simulation game based on Transport Tycoon Deluxe

    OpenTTD is an open source transport simulation game based on the popular game Transport Tycoon Deluxe by Chris Sawyer, with several additions. OpenTTD is as close to the original as you can get, but has been extended with plenty of great features. These include bigger maps (up to 64 times bigger than the original), stable multiplayer mode that allows for up to 255 players in 15 companies, in-game downloading of heightmaps, AIs, scenarios, and so much more. With its many additions and improvements players are sure to have a greatly enhanced gaming experience. Try it for yourself!
    Downloads: 9 This Week
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  • 22
    Privateer Gemini Gold is a remake of the classic space simulation adventure Privateer that was part of the Wing Commander games series. It brings back the magic of the Gemini Sector with a modern game engine and high resolution graphics.
    Downloads: 43 This Week
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  • 23
    A UNIX/Windows/Linux remake of the DOS-game "stunts", providing modern features like openGL graphics, 3D sound and internet multiplaying. Design your own tracks, choose your opponents and try the most spectacular stunts you've ever seen.
    Downloads: 29 This Week
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  • 24
    Danger from the Deep

    Danger from the Deep

    WW2 U-boat simulation

    SDL/OpenGL based WW2 german submarine 3d simulation, multilanguage support, multiplatform support with advanced sound and graphics. Please visit dangerdeep.sourceforge.net for any news or visit us in #dangerdeep on freenode IRC.
    Downloads: 26 This Week
    Last Update:
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  • 25
    logisim is a fully modularized logic circuit simulator for unix-compatible systems. It supports a lot of different graphic outputs and can simulate a lot of different gate types. Additionally it can be extended easily by simply adding new gate modules.
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    Downloads: 69 This Week
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