Middle-earth: Shadow of Mordor - Game of the Year Edition

Don't make me tap the sign!

You can create a free trial of prime, grab the games, then cancel it if you don't want to give any money to Amazon

You can use a Lemmy client which lets you set content filters to block all posts containing [Prime if you just never want to see these giveaways

But you do get to keep the game forever through GOG.