AfricasTalking.Unity (nuget): This is an SDK that helps to implement Africa's Talking APIs (SMS,Airtime,Mobile Checkout, B2C) in your Unity3D project. There are also functions that make use of the Firebase Database -  a feature we are currently exploring and will like your feedback as this is still in its early stages. Feel free to contact us if you have any queries at info@africastalking.com
Keywords: C#|Unity|Africa|Payment|Firebase