Best Game Engines for C++

Nakama is a game server framework that is open source and created by Heroic Labs, aimed at supporting the development of real-time, multiplayer, and social gaming experiences across a variety of platforms like Godot, Unity, and Unreal Engine. It offers an extensive range of features including real-time multiplayer support, customizable matchmaking systems, leaderboards, in-game chat functionalities, and management of in-game currencies. Developers are empowered to enhance Nakama's capabilities through server-side scripts written in languages such as Go, TypeScript, or Lua, which provides them with authoritative game mechanics and greater oversight of the game's state. Additionally, the platform features open-source client libraries that cater to various game engines and programming languages, ensuring developers have the tools they need for smooth integration and versatility in their projects. Unlike traditional multi-tenant SaaS solutions, Nakama serves as a dedicated server, enabling developers to incorporate custom features and maintain secure, authoritative gameplay directly on their game servers. This level of customization allows for unique gaming experiences tailored to the specific needs of each project.

Gideros is an open-source and free framework designed for cross-platform game development, allowing developers to craft high-performance 2D games using the Lua programming language. It streamlines the testing process on actual devices via Wi-Fi, removing the need for time-consuming export or deployment steps. Constructed with C/C++ and OpenGL, Gideros guarantees that games operate at native speeds, maximizing the potential of both CPUs and GPUs. The framework is easily extensible through plugins, which enable developers to incorporate pre-existing code written in C, C++, Java, or Objective-C, and connect it to Lua seamlessly. Gideros features its own class system aligned with standard object-oriented programming conventions, promoting clean, modular, and reusable code. The all-encompassing development environment consists of a lightweight IDE, players compatible with desktops and devices, as well as tools for texture packing and font creation. Gideros is compatible with various platforms, such as Windows, macOS, Linux, iOS, Android, and HTML5, ensuring that developers can reach a broad audience with their games. This versatility makes Gideros an appealing choice for indie developers and small studios aiming to produce engaging gaming experiences.

Solar2D is a game engine that utilizes Lua for its design and emphasizes user-friendly iterations. Originating as an open-source project derived from the popular Corona SDK, it empowers developers to build applications for a multitude of devices including mobile phones, desktops, and connected TVs, all while maintaining a single codebase that caters to platforms like iOS, tvOS, Android, Android TV, macOS, Windows, Linux, and HTML5. One of its standout features is an instant-update simulator that allows developers to view code modifications in real time, complemented by live builds that facilitate quick testing on actual devices via a local network. Additionally, Solar2D boasts a comprehensive selection of plugins designed to enhance its core capabilities, addressing needs such as in-app advertising, analytics, and multimedia functionalities. Developers seeking further customization can utilize Solar2D Native, which enables the integration of any native libraries or APIs written in languages like C, C++, Objective-C, or Java. Powered by the efficient Lua scripting language, Solar2D is entirely free to use without any hidden costs, fees, or royalties, making it an appealing choice for game developers. This accessibility and flexibility foster a vibrant community of developers who continuously contribute to the engine's growth and capabilities.

Cocos2d-x is a versatile, open-source game engine that has been a reliable tool for developers since its inception in 2011, providing a lightweight and flexible solution for cross-platform game development. With support for C++, Lua, and JavaScript, it caters to a wide array of platforms including iOS, Android, Windows, macOS, and popular HTML5 browsers like Chrome, Safari, and Internet Explorer. This engine leverages OpenGL ES 2.0 and Metal for efficient graphics rendering, ensuring that it taps into the full GPU capabilities of mobile devices while ensuring compatibility across various systems. Developers benefit from the ability to utilize Lua or JavaScript for scripting, facilitating seamless hot updates for their games without the lengthy process of submitting to app stores for approval. The open-source nature of Cocos2d-x encourages extensive customization, allowing developers to create tailored game types and extensions, and even integrate their own 3D engines to address challenges in 2D interface and UI design. Notably, data indicates that version 3.x of Cocos2d-x is compatible with an impressive 99.7% of Android devices in China, highlighting its widespread usability and effectiveness in the gaming industry. This level of compatibility makes it an appealing choice for developers aiming to reach a broad audience within the mobile gaming market.

Cocos Creator serves as a versatile and lightweight open-source graphics engine that facilitates the creation of both 2D and 3D digital content across multiple platforms in real-time. Its capabilities extend beyond game development, offering comprehensive solutions for sectors such as automotive, XR, the Metaverse, and education, making it a highly adaptable tool. The engine is designed for high performance while maintaining low power consumption, enabling features like streaming loading and seamless cross-platform publishing. With an intuitive all-in-one editor tailored for artists, game designers, and developers, Cocos Creator also boasts a robust plug-in system that allows for extensive customization, a fluid animation editor, and a user-friendly TypeScript scripting language that simplifies debugging. It effectively supports a wide range of platforms, providing both accessible and professional-grade tools for crafting immersive virtual environments. Additionally, Cocos Creator addresses diverse needs such as virtual character development, industrial simulations, interactive marketing strategies, XR content production, gaming experiences, and advanced smart digital cockpit solutions. Overall, its versatility and extensive feature set make Cocos Creator a powerful choice for anyone looking to innovate in the digital landscape.

UNIGINE is a cutting-edge real-time 3D engine crafted for both enterprise users and technology aficionados, delivering stunningly realistic graphics and the ability to manage extensive virtual environments through its C++ and C# application programming interfaces. Designed with open-world features, the engine boasts innovative terrain technology that achieves remarkable detail, allowing for precision of up to 1 mm per pixel, in addition to enabling runtime changes and collaborative editing. It also accommodates 64-bit precision for coordinates, making it possible to create scenes that could encompass entire solar systems. UNIGINE offers three specialized SDK editions to cater to diverse requirements: the Sim SDK, which is perfect for simulation and training in vast planetary scenarios and immersive display configurations; the engineering SDK, which seamlessly integrates into enterprise solutions like digital twins, Building Information Modeling (BIM), and smart city initiatives, equipped with sophisticated GIS and CAD data management; and the Community SDK, aimed at tech enthusiasts who are venturing into game and VR development. As a versatile platform, UNIGINE empowers creators to push the boundaries of what is possible in virtual environments, thereby fostering innovation across various industries.