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[Prime] LEGO Indiana Jones: The Original Adventures
(gaming.amazon.com)
Three Lego adventures for Windows, free for Amazon Prime subscribers until 9th October
Sure, but ultimately it's something a lot of people have access to anyway, and with a small amount of hoop-jumping you can get quite a lot of games for free.
I've not tried, but I guess they might try and tempt you back with the offer of more free subscription months. I was thinking more just create a new account and grab the 30-odd games that are currently available, then come back in a year when you've played them all and repeat with a new email.