Regarding Amazon, „Alexa“ means their Alexa Voice Service which includes third party services (like our skills) and other related Software.
When you use our skills you have to talk to Alexa. This voice input is sent to Amazon where it is converted into text. This text is processed and the information about intent and possible parameters are sent to us where we use it to understand what our skill should do for you. This is absolutely necessary for our service to give you an appropriate answer.
We never collect more than the necessary amount of personal data and do not share personal data with our skills.
To play games it is necessary to save a unique ID. This ID is provided by Amazon.
We store additional information, like how many times you have visited, what was the last action you did and some other user data that are neccessary to provide the functionality the skill is providing. This data is stored with us.
To improve our service we analyze automatically how often utterances are spoken and other analytics. This is done automatically by Amazon in the Amazon Developer Portal.