I like that it's free! It has all of my favorite aspects in one place, but they really need to add more functionality. As this was said before by others, there are few things we want from an SDK/API standpoint (i.e., being able to use our own API server). The best part about this product is how easy it makes creating games for mobile devices using Unity or Unreal Engine 4. We have been working with other developers as well who prefer not having their code distributed through GitHub - which isn't always allowed at times when trying to get into certain markets where open source projects aren't accepted. This allows us to easily create multiplayer experiences without any hassle or limitations. Also helps save time since we don’t have to spend hours figuring out what libraries should be used and why they work so differently than expected. Being able to make game prototypes quickly and then build them up after making.