https://www.polygon.com/2018/3/9/17100336/amnesia-collection-free-steam

Frictional Games is offering the entire Amnesia franchise in a free bundle for a limited time, and it’s worth picking up if you didn’t get them in a previous deal.

“Add Amnesia Collection to your account permanently and play for FREE starting now for a limited time!” the announcement says on Steam. “The Amnesia Collection includes both Amnesia: The Dark Descent and Amnesia: A Machine for Pigs. Once you click ‘Install Game’ both games will remain in your account after the free period, so don’t miss out on this opportunity to play these two dark survival horror games.”