Free 30-Day Amazon / Prime Gaming trial:

30-Day trial Amazon Prime (USA)
30-Day trial Amazon Prime (Germany)
30-Day trial Amazon Prime (UK)
30-Day trial Amazon Premium (Spain)
30-Day trial Amazon Premium (France)
30-Day trial Amazon Premium (Poland)

A trial version of Prime membership is available for new Amazon users only. After 30 days, the subscription will be automatically renewed, and you will be charged. If you want to avoid that, you can cancel it during the trial period.