Amazon Prime Games GOG Code for the month of Feburary

BioShock Infinite Complete Edition
The Talos Principle: Gold Edition

February 13
The Smurfs 2 - The Prisoner of the Green Stone
Dark Sky

February 20
Colt Canyon

February 27
Deux Ex: Human Revolution
Yes, Your Grace

From here

Amazon Prime Games GOG Code for the month of March

Saints Row: The Third Remastered
Mafia II: Definitive Edition

March 13
Syberia: The World Before
Dark Deity: Complete Edition

March 20
Mutazione
Legacy of Kain: Definance

March 27
Deus Ex: invisible War
Gamedec- Definitive Edition

From here