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

  • AestheticsPro Medical Spa Software Icon
    AestheticsPro Medical Spa Software

    Our new software release will dramatically improve your medspa business performance while enhancing the customer experience

    AestheticsPro is the most complete Aesthetics Software on the market today. HIPAA Cloud Compliant with electronic charting, integrated POS, targeted marketing and results driven reporting; AestheticsPro delivers the tools you need to manage your medical spa business. It is our mission To Provide an All-in-One Cutting Edge Software to the Aesthetics Industry.
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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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  • 1
    Source Engine

    Source Engine

    Modified source engine (2017) developed by valve and leaked in 2020

    The Source Engine repository under that particular GitHub user appears to be a custom (or forked) version of a game engine — likely an engine derived from or inspired by the classic Source engine lineage (or at least the name evokes that lineage). However, publicly-available documentation, community support or clarity about the project’s scope and maturity seems limited: the repo does not clearly advertise a full engine release or wide adoption. As such, it feels more like an experimental or hobby project: potentially a work-in-progress engine or engine-in-progress reimplementation rather than a full production-ready game engine. For a developer, this means you're likely to face missing features, limited tooling, and the need to fill gaps yourself, but also that you have a chance to influence or shape the architecture as you develop.
    Downloads: 181 This Week
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  • 2
    Stockfish

    Stockfish

    UCI chess engine

    Stockfish is a free, powerful UCI chess engine derived from Glaurung 2.1. Stockfish is not a complete chess program and requires a UCI-compatible graphical user interface (GUI) (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena, Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably. Read the documentation for your GUI of choice for information about how to use Stockfish with it. Stockfish is a 11-time winner of the Top Chess Engine Championship. Stockfish is open source (GPLv3 license). That means you can read the code, modify it, and contribute back. You can use Stockfish on your computer or on your iOS or Android device. So you can get world-class chess analysis, wherever you are. The Stockfish engine features two evaluation functions for chess, the classical evaluation based on handcrafted terms, and the NNUE evaluation based on efficiently updatable neural networks.
    Downloads: 167 This Week
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  • 3
    Delta  Executor For PC  No Key

    Delta Executor For PC No Key

    Download Delta Roblox executor for keyless scripting. Latest Update

    Delta Roblox Executor is a powerful, keyless script executor built for Roblox on PC. It allows users to safely and efficiently run custom Lua scripts in any Roblox game, unlocking new features, automation, and enhanced control over gameplay. Tested and benchmarked for top performance, Delta stands out from other free executors thanks to its clean UI, fast injection time, and support for most modern scripts. Following the discontinuation of our previous executor, Delta is now the official and recommended tool for all script users and developers in our community. Each version of Delta is directly published by trusted developers and scanned for safety before release. Our platform ensures a safe, secure, and ad-free download experience with no keys or verification links required. It's free, easy to use, and compatible with both beginners and advanced users. Whether you're automating farming in Blox Fruits or running GUIs in Pet Simulator X, Delta Executor gives you the performance
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    Downloads: 1,503 This Week
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  • 4
    Virtual Controller

    Virtual Controller

    Program to control vJoy / vXbox Device via keyboard, mouse, joystick.

    Description Program to control Virtual Input Devices via physic Input Devices. Supported Virtual Input Devices: vJoy (Virtual Generic Joystick) vXbox (Virtual Xbox 360 Gamepad) vKeyboard (Simulated Keyboard) vMouse (Simulated Mouse) Supported Physic Input Devices: Keyboard Mouse Joystick System Requirements Operating system: Windows XP, Windows 7, Windows 8, Windows 10 Additional software: NET Framework 4 Notes: For Windows 7, for the virtual Xbox 360 Gamepad to work correctly, you need to install the following components: Microsoft Xbox 360 Accessories, Microsoft Security Advisory 3033929
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    Downloads: 1,174 This Week
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  • Premier Construction Software Icon
    Premier Construction Software

    Premier is a global leader in financial construction ERP software.

    Rated #1 Construction Accounting Software by Forbes Advisor in 2022 & 2023. Our modern SAAS solution is designed to meet the needs of General Contractors, Developers/Owners, Homebuilders & Specialty Contractors.
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  • 5
    Scid
    Scid is a chess database application (cross-platform, for Unix/Linux and Windows) with many search and database maintenance features.
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    Downloads: 609 This Week
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  • 6
    SysDVR

    SysDVR

    Stream switch games to your PC via USB or network

    This is a sysmodule that allows capturing the running game output to a pc via USB or network connection. Stream and switch games to your PC via USB or network. Cross-platform, can stream to Windows, Mac and Linux. Stream via USB or Wifi. Video quality is fixed to 720p @ 30fps with h264 compression, this is a hardware limit. Audio quality is fixed to 16bit PCM @ 48kHz stereo. Not compressed. Very low latency with an optimal setup, most games are playable.
    Downloads: 128 This Week
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  • 7
    Cube 2: Sauerbraten (game engine & FPS)
    3D game engine (more powerful redesign of the Cube engine) and FPS game
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    Downloads: 575 This Week
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  • 8

    Irrlicht Engine

    3D Engine c++

    The Irrlicht Engine is an open source high performance realtime 3D engine written and usable in C++. It is completely cross-platform, using D3D, OpenGL and its own software renderers.
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    Downloads: 588 This Week
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  • 9
    Dune 0.97.04 Released for windows. Likely to be some bugs For older version please navigate to 0.96.4 folders. Updated clone of Westood Studios' Dune2 which uses data files from the original game. New features include multiple unit selection/control, high resolution support, multiplayer gaming, improved gui and a selection of new AI's to play against.
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    Downloads: 626 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
    Unreal Engine 4/5 Scripting System

    Unreal Engine 4/5 Scripting System

    Injectable LUA scripting system, SDK generator, live property editor

    Lua scripting system platform, C++ Modding API, SDK generator, blueprint mod loader, live property editor and other dumping utilities for UE4/5 games. The goal of UE4SS is not to be a plug-n-play solution that always works with every game. The goal is to have an underlying system that works for most games.
    Downloads: 121 This Week
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  • 11
    Exult
    A game engine for running Ultima7 on modern operating systems, plus a map-editor and other tools for creating your own mods and games.
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    Downloads: 531 This Week
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  • 12
    PCSX2

    PCSX2

    The Playstation 2 emulator

    PCSX2 is a free and open-source PlayStation 2 (PS2) emulator. Its purpose is to emulate the PS2's hardware, using a combination of MIPS CPU Interpreters, Recompilers and a Virtual Machine that manages hardware states and PS2 system memory. This allows you to play PS2 games on your PC, with many additional features and benefits. The PCSX2 project has been running for more than ten years. Past versions could only run a few public domain game demos, but newer versions can run most games at full speed, including popular titles such as Final Fantasy X and Devil May Cry 3. Visit the PCSX2 compatibility list to check the latest compatibility status of games (with more than 2500 titles tested), or ask for help in the official forums. The latest officially released stable version is version 1.6.0. Installers and binaries for both Windows and Linux are available from our website.
    Downloads: 111 This Week
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  • 13
    Homebrew App Store

    Homebrew App Store

    GUI for downloading/managing homebrew apps for video game consoles

    A Chesto-based graphical frontend to the get package manager for downloading and managing homebrew on video game consoles, such as the Nintendo Switch and Wii U. This is a replacement to the older Wii U Homebrew App Store. To run this program, a Nintendo Switch with access to the Homebrew Menu is required. This can be done on most Switches manufactured before July 2018, for compatibility check your serial number at ismyswitchpatched. Download and extract the latest hb-appstore to sd:/switch/appstore/, and run "HB App Store" from within hbmenu. When you're done, you can press the Home or Minus buttons to exit. To run this program, a modded Wii U is required. There are work-in-progress ports to 3DS and Wii, with varying degrees of feature support. These can be compiled using the instructions below, but aren't yet ready to be used by most users.
    Downloads: 102 This Week
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  • 14
    Proton

    Proton

    Compatibility tool for Steam Play based on Wine and other components

    Proton is a tool for use with the Steam client which allows games which are exclusive to Windows to run on the Linux operating system. It uses Wine to facilitate this. Most users will prefer to use Proton provided by the Steam client itself. The source code is provided to enable advanced users the ability to alter Proton. For example, some users may wish to use a different version of Wine with a particular title. As the new Steam Play is still in Beta, it is recommended that you opt into the Steam Client Beta for the latest features and fixes. Proton works best with the latest graphics drivers. For some cutting edge games and graphical features, you may need drivers newer than what your distribution ships. Install and play games! We strongly recommend that most users use the production build of Proton.
    Downloads: 101 This Week
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  • 15
    ChessX

    ChessX

    Chess Database and PGN viewer

    A free and open source chess database application for Linux, Mac OS X and Windows.
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    Downloads: 478 This Week
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  • 16
    MinecraftConsoles

    MinecraftConsoles

    A certain block game

    MinecraftConsoles is an open-source project that revives and modernizes the legacy console edition of Minecraft by rebuilding it into a multi-platform, extensible codebase. It is based on the original Legacy Console Edition source and introduces numerous fixes and improvements to enhance stability, performance, and usability on modern systems. The project aims to serve as a foundation for further development such as modding, backports, and experimentation with features that were previously locked to console environments. It supports running on desktop platforms with keyboard and mouse input, making it more accessible beyond its original console-focused design. The repository also includes a dedicated server implementation, enabling multiplayer experiences and LAN-based connectivity. Developers can build and modify the project using modern toolchains, making it a flexible environment for both preservation and innovation.
    Downloads: 95 This Week
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  • 17
    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: 412 This Week
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  • 18
    OptiScaler

    OptiScaler

    OptiScaler bridges upscaling/frame gen across GPUs

    OptiScaler is an open-source modding tool designed to enhance graphics performance and flexibility in modern PC games by allowing users to replace or modify built-in upscaling technologies. Instead of relying on the upscaling method originally integrated by a game developer, the software intercepts the game’s rendering pipeline and redirects it to alternative technologies chosen by the user. This makes it possible to swap technologies such as NVIDIA DLSS, AMD FSR, or Intel XeSS even if the game only supports one of them by default. The tool effectively acts as a compatibility layer between the game engine and multiple upscaling frameworks, enabling cross-GPU access to features that might otherwise be restricted to specific hardware ecosystems. In addition to replacing upscalers, OptiScaler can enable frame generation features in titles that do not officially support them, improving frame rates and perceived smoothness during gameplay.
    Downloads: 92 This Week
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  • 19
    YimMenuV2

    YimMenuV2

    Experimental menu for GTA 5: Enhanced

    YimMenuV2 is an experimental modification menu for Grand Theft Auto V Enhanced that provides users with extended control over gameplay through an injected interface. Built primarily in C++, it operates by injecting a dynamic library into the game process, enabling access to internal systems and allowing for real-time interaction with game mechanics. The project is designed as a flexible framework for modifying gameplay, offering features that can alter player behavior, session interactions, and in-game elements. It is distributed as a testing-oriented tool with nightly builds, reflecting its experimental and evolving nature. The software includes compatibility considerations such as integration with external tools for safer usage and instructions for configuring the game environment. Its architecture allows for extensibility, with community contributions and scripts expanding its functionality over time.
    Downloads: 90 This Week
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  • 20

    VisualBoyAdvance

    An emulator for Gameboy and GameboyAdvance systems

    An emulator for Gameboy and GameboyAdvance systems.
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    Downloads: 460 This Week
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  • 21
    SuperTux

    SuperTux

    Classic 2D side-scrolling platformer game

    SuperTux is a classic 2D side-scrolling platformer game inspired by titles like Super Mario Bros. Players control Tux, the Linux mascot, navigating through various levels filled with obstacles and enemies. The game features a rich set of levels, engaging gameplay mechanics, and a level editor for creating custom stages.
    Downloads: 77 This Week
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  • 22
    Golly

    Golly

    For exploring cellular automata like Conway's Game of Life.

    A cross-platform application for exploring Conway's Game of Life and many other types of cellular automata.
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    Downloads: 288 This Week
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  • 23
    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: 290 This Week
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  • 24
    DuckStation

    DuckStation

    Fast PlayStation 1 emulator for x86-64/AArch32/AArch64

    DuckStation is an simulator/emulator of the Sony PlayStation(TM) console, focusing on playability, speed, and long-term maintainability. The goal is to be as accurate as possible while maintaining performance suitable for low-end devices. "Hack" options are discouraged, the default configuration should support all playable games with only some of the enhancements having compatibility issues. A "BIOS" ROM image is required to to start the emulator and to play games. You can use an image from any hardware version or region, although mismatching game regions and BIOS regions may have compatibility issues. A ROM image is not provided with the emulator for legal reasons, you should dump this from your own console using Caetla or other means. DuckStation features a fully-featured frontend built using Qt, as well as a fullscreen/TV UI based on Dear ImGui.
    Downloads: 66 This Week
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  • 25
    SuperTuxKart
    SuperTuxKart is a kart racing game featuring Tux and friends. It is a fun-racer game, focusing on fun and ease of play.
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    Downloads: 268 This Week
    Last Update:
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