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.

  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

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  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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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: 2,813 This Week
    Last Update:
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  • 2
    0 A.D.

    0 A.D.

    0 A.D. is a free, open-source, cross-platform real-time strategy game.

    0 A.D. (pronounced "zero ey-dee") is a cross-platform real-time strategy (RTS) game of ancient warfare. It's a historically-based war/economy game that allows players to relive or rewrite the history of ancient civilizations, each depicted at their peak of economic growth and military prowess.
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    Downloads: 366 This Week
    Last Update:
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  • 3
    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: 355 This Week
    Last Update:
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  • 4
    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**
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    Downloads: 115 This Week
    Last Update:
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  • Demo Series - Small Business Backup By Veeam Icon
    Demo Series - Small Business Backup By Veeam

    Learn how to protect your Microsoft 365 data, with simple, actionable tips today.

    Watch this on-demand demo series and learn how to protect your Microsoft 365 data with clear, simple, actionable steps that are easy to implement for businesses of all sizes.
    Watch Demo Series
  • 5
    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: 611 This Week
    Last Update:
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  • 6
    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: 59 This Week
    Last Update:
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  • 7
    FCEUX11

    FCEUX11

    Accurate NES / Famicom emulation, experimental GBA (Beta) support.

    FCEUX11 is a derivative of the FCEUX NES/Famicom emulator, optimized for Windows. It inherits FCEUX's renowned emulation accuracy while delivering a polished, modern Windows-native experience powered by Qt6, with 12-language localization and a full suite of debugging and TAS tools for developers and speedrunners. Ongoing internal refactoring and performance optimization keeps the emulator efficient, smooth, and stable even under heavy load. Experimental Game Boy Advance (GBA) emulation support has been added, reusing the existing UI, save-state system, hotkeys and debugging infrastructure; GBA features are in Beta, the picture carries a watermark, and some hardware features are not yet fully implemented.
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    Downloads: 121 This Week
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  • 8
    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: 92 This Week
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  • 9
    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: 10 This Week
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  • Paessler - Monitor Your Whole Network in Minutes Icon
    Paessler - Monitor Your Whole Network in Minutes

    Auto-discovery finds your devices and deploys pre-configured sensors instantly. No project plan required, just visibility from day one.

    Waiting weeks for a monitoring rollout isn't an option when infrastructure doesn't stop running. PRTG's auto-discovery scans your network and suggests from over 200 pre-configured sensor types, so you're watching servers, applications and devices within minutes, not after a multi-week deployment. Enterprise-strength monitoring, without the enterprise complexity. Start your free trial today.
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  • 10
    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: 13 This Week
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  • 11
    Helldivers 2 Binder Free v1.1.4

    Helldivers 2 Binder Free v1.1.4

    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: 2 This Week
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  • 12
    Lucifer

    Lucifer

    Lucifer: The Ultimate Dev-Ecosystem

    "Everything is integrated. Now, even I can't control it." 루시퍼(Lucifer)는 더 이상 단순한 런처가 아닙니다. 개발자가 필요로 하는 모든 하부 구조를 하나로 집대성한, 통제 불가능한 수준의 올인원 통합 제어 환경입니다. 🚀 핵심 특징 (Core Features) 시리얼 제어 (Advanced Serial Control): 하드웨어와의 접점을 완벽하게 장악합니다. 아두이노 및 각종 임베디드 장치와의 데이터 송수신을 가장 드라이하고 정밀하게 수행합니다. 서버 통합 (Terra Server Engine): MariaDB 연동형 고성능 자바 서버 '테라(Terra)'를 코어로 품어, 데이터 처리와 로직 실행의 중심축을 담당합니다. 톰캣 내장 (Embedded Tomcat): 별도의 WAS 설치 없이도 웹 환경을 즉각적으로 구동합니다. 루시퍼가 곧 웹 서버이자 플랫폼이 됩니다. 자바 내장 (Portable Java Environment): 환경 변수 설정이나 버전 갈등에서 완전히 자유롭습니다. 루시퍼 실행 파일 하나에 최적화된 자바 환경이 포함되어 어디서든 즉시 가동됩니다.
    Downloads: 5 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
    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: 1 This Week
    Last Update:
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  • 15

    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: 1 This Week
    Last Update:
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  • 16
    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: 1 This Week
    Last Update:
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  • 17
    LSJ-Server

    LSJ-Server

    LSJ-Server-Terra (Java Multipurpose Sever connected with MariaDB)

    **LSJ-Server (Terra)**는 MariaDB 연동 순수 자바 기반 고성능 경량 서버입니다. 프레임워크 없이 핵심 기술로만 구축되어 기업 유지보수 및 게임 서버에 최적화된 속도를 보장합니다. [핵심 기능] Java & MariaDB: 신속한 데이터 처리 및 안정적 연동. 실시간 관리: GUI 로그 모니터링 및 유저 관리. 최적화: 다중 접속을 위한 저지연 TCP/IP 환경. [사용 방법] 설정: MariaDB 정보 및 포트(10815) 입력. 제어: '서버 시작/중지' 버튼으로 서비스 관리. 모니터링: 중앙 로그와 우측 유저 목록 확인 및 하단 명령창 제어. LSJ-Server (Terra) is a high-performance, lightweight socket server built with Pure Java and MariaDB. It offers a robust backend for IT maintenance and MMORPG/RTS games without heavy framework overhead. [Features] Pure Java & MariaDB: Fast data processing & persistence. Real-time Monitoring: GUI for live logs and user management. Optimized Networking: Low-latency TCP/IP support. [How to Use] Config: Set MariaDB and Port (default: 10815). Control: Use 'Start' and 'Stop' buttons. Manage: Monitor logs/users and use the bottom command field. https://github.com/s1213123/LSJ-Server/
    Downloads: 1 This Week
    Last Update:
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  • 18
    Torus is a simple and easy game. The object of Torus is to clear falling toruses by aligning toruses with the same color on one of several protruding pipes (the game concept is similar to Tetris(R)). This game is inspired by Torus for DOS(R).
    Downloads: 1 This Week
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  • 19
    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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  • 20

    GoBangGame

    A small chinese game written in java

    Downloads: 0 This Week
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  • 21
    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: 0 This Week
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  • 22
    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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  • 23
    L2Net is .net Alternative Lineage 2 Server and Client.
    Downloads: 0 This Week
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  • 24
    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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  • 25
    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: 0 This Week
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