Havok is a game engine middleware that is primarily known for its advanced physics engine. It is often used in racing and action games to create realistic and dynamic physics simulations.

Unity is a popular game engine that is widely used for developing mobile games. It is known for its ease of use, cross-platform capabilities, and large asset store, which provides developers with a wide range of resources.

Unreal Engine is known for its powerful graphics engine and is often used in high-end AAA games. It is known for its realistic lighting, detailed textures, and advanced rendering techniques.

Source is a game engine developed by Valve that is known for its advanced physics engine and modding capabilities. It has been used to create popular games such as Half-Life 2, Portal, and Team Fortress 2.

Godot is an open-source game engine that is popular among indie game developers. It is known for its ease of use, cross-platform capabilities, and built-in tools for creating 2D and 3D games.

RPG Maker is a game engine that is specifically designed for creating role-playing games and strategy games. It is known for its powerful scripting language, which allows developers to create complex game mechanics and storylines.

Frostbite is a game engine developed by EA DICE that is known for its focus on multiplayer gaming. It is often used in first-person shooters and massively multiplayer online games, such as Battlefield and Star Wars Battlefront.

Unreal Engine is known for its advanced artificial intelligence system, called Unreal Engine AI. It allows developers to create sophisticated AI behaviors for non-player characters (NPCs) and enemies, making games more challenging and immersive.

ARKit is a game engine developed by Apple that is specifically designed for virtual reality (VR) and augmented reality (AR) development. It provides developers with tools and APIs to create immersive AR and VR experiences on iOS devices.

GameMaker Studio is a game engine that is specifically designed for creating 2D games. It is known for its ease of use, drag-and-drop interface, and built-in tools for creating sprites, backgrounds, and game mechanics.

Lumberyard is a game engine developed by Amazon that is specifically designed for creating 3D games. It is known for its powerful graphics engine, physics engine, and tools for creating large and detailed game worlds.

rFactor is a game engine that is specifically designed for creating realistic simulations. It is known for its advanced physics engine, which allows developers to create realistic simulations of vehicles, weather, and other physical phenomena.

Construct 3 is a game engine that is specifically designed for creating educational games. It is known for its ease of use, drag-and-drop interface, and built-in tools for creating interactive lessons and games.

Cocos Creator is a game engine that is specifically designed for creating games for mobile devices. It is known for its ease of use, cross-platform capabilities, and built-in tools for creating 2D and 3D games.

Phaser is a game engine that is specifically designed for creating games for the web. It is known for its ease of use, cross-platform capabilities, and built-in tools for creating 2D games.