Watch Dogs and The Stanley Parable on Epic Games
Visit the store pages:
https://store.epicgames.com/GRABFREEGAMES/the-stanley-parable
https://store.epicgames.com/GRABFREEGAMES/watch-dogs
Create an account or log in an already existing one and permanently add the games on your account. Alternatively you can redeem them from the Epic Launcher on the games' giveaway page.
Scroll down and claim the Standard Edition on Watch Dog's store page.