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.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

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    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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  • FusionAuth: Authentication and User Management Software Icon
    FusionAuth: Authentication and User Management Software

    Offer your users flexible authentication options, including passwords, passwordless, single sign-on (SSO), and multi-factor authentication (MFA).

    FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days - not months.
    Learn More
  • 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: 2,993 This Week
    Last Update:
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  • 2
    FreeCol

    FreeCol

    Colonize the New World.

    FreeCol is a turn-based strategy game based on the old game Colonization, and similar to Civilization. The objective of the game is to create an independent nation. You start with only a few colonists defying the stormy seas in their search for new land. Will you guide them on the Colonization of a New World? The last stable version release can be found here: https://sourceforge.net/projects/freecol/files/latest/download The latest test pre-release of the next version can be found here: https://github.com/FreeCol/freecol/releases If you want to contribute to Freecol please visit our welcome information thread to see how here: https://sourceforge.net/p/freecol/discussion/719661/thread/2d0063a3bc/
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    Downloads: 524 This Week
    Last Update:
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  • 3
    EE Keeper

    EE Keeper

    EE Keeper is a saved game editor for Baldur's Gate Enhanced Edition.

    EE Keeper is saved game editor for Baldur's Gate: Enhanced Edition and Baldur's Gate II: Enhanced Edition. This project is a continuation of Shadow Keeper, originally released by Aaron O'Neil in 2000 for Baldur's Gate II: Shadows of Amn and Throne of Bhaal. This version will still work with the original BG2. Currently, it will only work natively on Windows, although it has been tried through Wineskin on Mac OS X and currently works, though no guarantee is in place that this will continue to be. Maximising that support is a priority, however. Please note: unless otherwise stated, EE Keeper will be archived in Zip format and uploaded. Please note, any support ticket that is created should be watched in case any extra information is needed. If you do not plan to keep and eye on your ticket and you have an account on the official Baldur's Gate forum, please be sure to provide your user name with the ticket in case any further information is required.
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    Downloads: 972 This Week
    Last Update:
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  • 4
    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.
    Downloads: 67 This Week
    Last Update:
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  • Turn traffic into pipeline and prospects into customers Icon
    Turn traffic into pipeline and prospects into customers

    For account executives and sales engineers looking for a solution to manage their insights and sales data

    Docket is an AI-powered sales enablement platform designed to unify go-to-market (GTM) data through its proprietary Sales Knowledge Lake™ and activate it with intelligent AI agents. The platform helps marketing teams increase pipeline generation by 15% by engaging website visitors in human-like conversations and qualifying leads. For sales teams, Docket improves seller efficiency by 33% by providing instant product knowledge, retrieving collateral, and creating personalized documents. Built for GTM teams, Docket integrates with over 100 tools across the revenue tech stack and offers enterprise-grade security with SOC 2 Type II, GDPR, and ISO 27001 compliance. Customers report improved win rates, shorter sales cycles, and dramatically reduced response times. Docket’s scalable, accurate, and fast AI agents deliver reliable answers with confidence scores, empowering teams to close deals faster.
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  • 5
    OpenKore

    OpenKore

    OpenKore is an automation tool for Ragnarok Online

    OpenKore is an automation tool for Ragnarok Online-compatible games, authorized to be used on KoreRO. **MOVING TO GITHUB** As of February 28th 2016, the OpenKore project has moved to GitHub. Please see the OpenKore wiki for more information: http://openkore.com/index.php/Git This SourceForge page will remain online for now, but the project has been locked in "read-only" mode and no more updates will be published here. **DOWNLOADING KORE FROM THIS PAGE WILL GIVE YOU AN OLD VERSION**
    Downloads: 45 This Week
    Last Update:
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  • 6
    Angry Birds Open-Level Editor

    Angry Birds Open-Level Editor

    Create your own Angry Birds levels with Open-Level Editor!

    Create, edit and share your own levels with Angry Birds Open-Level Editor! Select any items and characters as you want and add it to your level screen. Then export it to a file and play it in the game or share it to your friends! This software is... free, easy and offline!
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    Downloads: 145 This Week
    Last Update:
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  • 7
    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: 18 This Week
    Last Update:
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  • 8
    Live Game Server List (LGSL)

    Live Game Server List (LGSL)

    LGSL (Live Game for PHP 5.4-8+: online status for various gameservers

    LGSL (Live Game Server List) for PHP 5.4-8.3+: online status for Discord, FiveM, Rust, CS, SA:MP, GMOD, Minecraft, Source Query, etc.
    Downloads: 8 This Week
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  • 9
    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: 11 This Week
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  • Simplify Purchasing For Your Business Icon
    Simplify Purchasing For Your Business

    Manage what you buy and how you buy it with Order.co, so you have control over your time and money spent.

    Simplify every aspect of buying for your business in Order.co. From sourcing products to scaling purchasing across locations to automating your AP and approvals workstreams, Order.co is the platform of choice for growing businesses.
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  • 10

    GoBangGame

    A small chinese game written in java

    Downloads: 9 This Week
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  • 11
    jTarot is a tarot personal advisor. jTarot will do a "reading" for you when you need advice. A reading displays a number of cards and then describes what these cards mean. You take the reading and apply the meanings of the cards to your situation.
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    Downloads: 3 This Week
    Last Update:
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  • 12
    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: 1 This Week
    Last Update:
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  • 13
    PyCAPGE

    PyCAPGE

    PyCAPGE - Python Classic Adventure Point and Click Game Engine

    PyCAPGE (Python Classic Adventure Point and Click Game Engine) is a versatile, open-source framework designed for creating retro-style 2D graphic adventures using Python and Pygame. Inspired by the golden age of SCUMM games, it features a customizable 9-verb interface and robust inventory management. Key features include a Scene Manager supporting parallax scrolling, walk-behind masks, and depth-based character scaling. It implements intelligent Pathfinding to navigate complex environments automatically. The engine natively supports Multi-Character gameplay, allowing dynamic switching between protagonists. Developers can build rich narratives using the branching Dialogue System and a Cutscene Manager for scripted events. The architecture is data-driven: texts and definitions are separated into YAML files for easy localization. Includes a JSON Save/Load system and debug console.
    Downloads: 2 This Week
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  • 14
    LSJ-Launcher-v251215

    LSJ-Launcher-v251215

    Lucifer ate the tomcat.

    Lucifer ate the tomcat.. and embbed the more useful registry. and free software utilities.
    Downloads: 1 This Week
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  • 15
    L2Net is .net Alternative Lineage 2 Server and Client.
    Downloads: 1 This Week
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  • 16
    Puzzle Patch

    Puzzle Patch

    Entertaining and interactive game of solving 50+ puzzle pieces

    Welcome to Puzzle Patch, the ultimate desktop puzzle-solving experience that promises fun and engaging entertainment for players of all ages including kids! Kids will love to play this game as it helps in their cognitive development, spatial awareness as they arrange these scrambled puzzle pieces into 1 perfect picture. Visual recognition will be improved as kids try to identify shapes, patterns. Puzzle Patch has a wide array of features and functionalities designed to immerse you in a world of captivating gameplay with immersive sounds and delightful interaction. With a friendly user interface, and options to change background color, solving the puzzle is more of fun. Join us in the world of Puzzle Patch and unleash your puzzle-solving prowess! Whether you're a seasoned enthusiast or a curious beginner, solving puzzle is fun. Get ready for dazzling visuals and sounds. Let's play Puzzle Patch!
    Downloads: 1 This Week
    Last Update:
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  • 17
    ArgosFields is a Java/SWT port of famous turn-based stategy game Crimson Fields(http://crimson.seul.org/). Unlike the original game, it will provide full network support, but lack AI opponent(for now at least).
    Downloads: 0 This Week
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  • 18
    Betabot

    Betabot

    BDEF, WIE, MInfantry AI opponent

    A basic Bot for old half life 1 mod Support: -Base Defense version 1605: Betabot0001 -War In Europe beta 3: Betabot0101 -Mobile Infantry Beta 1- Training camp: betabot0200
    Downloads: 0 This Week
    Last Update:
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  • 19
    Helldivers 2 Binder Free v1.1.0

    Helldivers 2 Binder Free v1.1.0

    A macro runner for HELLDIVERS™ 2

    Helldivers 2 Binder allows you to select stratagems and assign hotkeys to each. In the game, you can use these hotkeys to instantly activate your stratagems without using the arrow keys.
    Downloads: 0 This Week
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  • 20
    Hollys is a role-playing game player developed with adobe actionscript 3.0. It originally developed in ruby and known as rpgxp. You can play rpgxp games on the web with the Hollys!
    Downloads: 0 This Week
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  • 21
    NaN3D is a real-time 3d software rendering engine for the C++ programming language. This project is relased under the LGPL License.
    Downloads: 0 This Week
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  • 22

    Open TeamPlay

    An OpenSource (C# .NET) TeamPlay Environment.

    An Open Source (C# .NET) TeamPlay Environment. - Permits the easy downloading of games that may not be available via Steam, and their Source Port derivatives. - Preconfigured for easy play. - Enables the easier download of enhanced user made content for such titles. - Enables easier Multi-Player. - May incorporate a chat client in later versions. - Encryption: May incorporate up to 9.99% U.S.-origin parts or components. Officially Supported Operating Systems: - Windows 7 Ultimate x86, N, x64 - Windows 7 Enterprise x86, N, x64 - Windows 7 Professional x86, N, x64 - Windows 7 Home Premium x86, N, x64 - Windows7 Home Basic x86, N, x64 - Windows 7 Starter N - Windows Vista Ultimate x86, x64 Ed. + More...
    Downloads: 0 This Week
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  • 23
    Rcon Controller for SA:MP

    Rcon Controller for SA:MP

    SA:MP server administration filterscript

    Rcon Controller: a SA:MP server administration tool. aims to provide real-time graphic/console monitoring / Instant managing. developed by CoolGuy.
    Downloads: 0 This Week
    Last Update:
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  • 24
    Microsoft Silverlight v2.0 v3.0 Client Visual Studio 2008 Server C++ MS-SQL Database 2000 WEB 2.0 Online Baduk Game Open source www.gBaduk.com services full source
    Downloads: 0 This Week
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  • 25
    This project is for developing a simple tetris using DirectX 9.0c. This tetris has the distinctive feature, compared to other tetris, that both the fade-out of full-lines and coming out of new controlled block goes in parallel.
    Downloads: 0 This Week
    Last Update:
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