1. Ease of Use: Buildbox is known for its drag-and-drop interface, making it extremely easy for beginners to create games without any coding knowledge. On the other hand, Phaser requires coding skills as it is a JavaScript framework, which can be more challenging for non-programmers.

2. Platform Support: Buildbox focuses primarily on mobile game development and provides extensive support for iOS and Android platforms. In contrast, Phaser is a versatile framework that supports multiple platforms, including web browsers, desktop, and mobile devices.

3. Customization and Flexibility: Buildbox provides a limited set of pre-built templates and assets, restricting customization options. On the contrary, Phaser offers a wide range of features, giving developers more flexibility to create highly customized games with their own assets and code.

4. Performance and Efficiency: Buildbox offers a streamlined and optimized development process, resulting in faster game creation. In comparison, Phaser offers more control over game performance, allowing developers to fine-tune and optimize their games for better efficiency.

5. Community and Resources: Buildbox has a smaller community compared to Phaser, which means fewer resources, tutorials, and support options available. Phaser, being open-source, has a large and active community with a plethora of resources, plugins, and documentation available to developers.

6. Pricing Model: Buildbox follows a subscription-based pricing model with different tiers depending on the intended usage and feature set. Phaser, on the other hand, is free and open-source, allowing developers to use it without any cost or restrictions.

In Summary, while Buildbox provides an easy-to-use interface and focuses on mobile game development, Phaser offers more customization options, platform support, and a larger community with extensive resources and documentation.