> ## Documentation Index > Fetch the complete documentation index at: https://docs.appcharge.com/llms.txt > Use this file to discover all available pages before exploring further. # Choose an Integration Solution Appcharge supports multiple solutions to accommodate different game development environments: * **Unity SDK Checkout Solution:** The Unity SDK integrates directly into the Unity engine, making it ideal for Unity-based games. For setup and API details, view the [Unity SDK Reference](./unity/introduction). * **Android Checkout Solution:** Tailored for Android platforms, this SDK ensures seamless payment processing within Android-based games. Learn more in the [Android SDK Reference](./android/introduction).