Modern JavaFX provides hardware acceleration support on a range of platforms, including desktop, mobile and embedded, allowing the development of high-performance cross-platform applications. However, to develop games with JavaFX effectively, numerous domain-specific concepts are needed. To address this need, the FXGL game engine extends JavaFX and brings support for real-world game development techniques. These include the entity-component model, A* pathfinding, particle systems, sprite sheet animations, and many other features. As a result, JavaFX (including Java and Kotlin) developers can produce games more quickly and more effectively with FXGL.