To support Play At Home, PlayStation will try to make those occasionally dull moments more exciting by offering Uncharted: The Nathan Drake Collection and Journey available for free* for a limited time through digital downloads from April 15 at 8pm PDT through May 5, 2020 at 8pm PDT Once you redeem the games, they are yours to keep.

Uncharted: The Nathan Drake Collection

For most of you, Uncharted: The Nathan Drake Collection will need no introduction. This three-game collection from the masters at Naughty Dog includes Uncharted: Drake’s Fortune, Uncharted 2: Among Thieves, and Uncharted 3: Drake’s Deception—all meticulously remastered for PS4. We can’t imagine a better time for globe-trotting adventures with Nathan Drake, an iconic cast of characters, and thrilling treasure-hunting action gameplay.

Journey

Then there’s Journey, a beautiful, celebrated adventure that is as moving as it is mysterious. The game’s life-affirming message is timeless, and perhaps more important now than ever before.

Free for all PS4 users, PlayStation Plus subscription not required

For those that have a little more time on their hands, you can receive a third free game, being Knack 2. However you'll need to set up a PSN account on the German store.

The process is very simple and is no different to setting up an account on the US PSN store - once the game is made available for free from 16th April this simply needs to be downloaded for free from the German PSN store, after which the game will be perfectly playable from an AU PSN account.

Guide for buying from US PSN store (same principles apply):

https://trendblog.net/how-to-buy-ps4-games-in-the-us-psn-sto...

Link to German store:

https://store.playstation.com/de-de/product/EP9000-CUSA07670...

Credit: HUKD for Knack 2 info