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

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  • 1
    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: 2,536 This Week
    Last Update:
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  • 2
    Celestia

    Celestia

    Real-time 3D visualization of space

    Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.
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    Downloads: 313 This Week
    Last Update:
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  • 3
    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: 11 This Week
    Last Update:
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  • 4
    HTLiveSight

    HTLiveSight

    HTLS is an Hattrick live match viewer, based on the old Livefox.

    With HTLiveSight, you can view your matches in a new way: you have explanations near the actions, live league table, popups and sound to advise you that something is happening in matches, even if you're doing other things on your pc! You can also add friends, so their matches are automatically added when you launch the program! Now we added the Relive feature, so you can watch your matches even if you're not at home when they're played! This application is a browser plugin and doesn't need any installation: the only requirement is have Mozilla Firefox and Google Chrome (soon Opera, Safari and mobile browsers) installed! So it's compatible with all the operating systems! And there are a lot of new things in development...check out the forum!
    Downloads: 7 This Week
    Last Update:
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  • 5
    Sudokuki - essential sudoku game

    Sudokuki - essential sudoku game

    Sudokuki is a free graphical SUDOKU game

    Sudokuki is a free graphical SUDOKU game: Sudokuki solves even the most difficult sudoku grids for you - Generate a sudoku - Play sudoku - Print a sudoku... Available in 17 languages. Just download and play! You can also play with arabic or chinese numbers. Sudokuki is Free Software developed in Java. Have fun!
    Downloads: 3 This Week
    Last Update:
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  • 6
    Nimzo-3d-Chess-GUI

    Nimzo-3d-Chess-GUI

    A free Chess program for Windows with a large set of features

    The Nimzo_3d GUI is a chess program for Windows 7 - 11 It is an enhanced version of the Tarrasch Chess GUI written by Mr Bill Forster, with many additional features. It has a simple, easy to use interface, so it is ideal for novice players or inexperienced computer users. It also has more advanced features for expert users. So if you just want a casual blitz game against the computer, or to automatically analyse one of the famous games from chess history, it can perform these tasks and many more. It has a choice of a classical 2d screen view or realistic 3d graphics powered by DirectX Anyone who wants to add new features to the program should download the file < Nimzo_3d_v4_build.7z> from the < Files > < Build> section. This package contains Visual Studio project files and C++ source code files. Alternative Nimzo 3d Chess GUI website with other downloads, including 32-bit versions - https://nimzo-3d-chess-gui.infinityfreeapp.com
    Downloads: 3 This Week
    Last Update:
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  • 7
    Basicly it'll have functions like X-fire and Steam but still it won't be a copy, or a remake of those platforms. Everyone will be able to personilze the platforms Client and Server side, by their client and gaming needs.
    Downloads: 0 This Week
    Last Update:
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  • 8
    PlayStation emulator from Russia written in pure ASM. Features DynaRec core and some HLE stuff. Uses PSEmuPro compatible plugins for most of the stuff.
    Downloads: 0 This Week
    Last Update:
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  • 9
    ScanPlay
    The idea is to create an easy to use engine for board game simulations on PC. Just scan or photograph your board and cards to play. Check games section for some game setups.
    Downloads: 0 This Week
    Last Update:
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    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

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  • 10
    Java version of Stellarium.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Mosaic game in 15-like view.
    Downloads: 0 This Week
    Last Update:
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  • 12
    bgs (brick game simulator) is an attempt to implement multipurpose gaming engine which will allow to port all existant puzzle games (like tetris, columns, puyo puyo sun, etc) to all operating systems using SDL as cross-platform multimedia library.
    Downloads: 0 This Week
    Last Update:
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