Gone Home is free until 3rd May (normally £11.99).
https://www.humblebundle.com/monthly/trove?utm_source=Tumblr&utm_medium=Link&utm_campaign=GoneHomeAllAccess
Game review: https://uk.ign.com/articles/2013/08/15/gone-home-review
Assassin's Creed Unity (Standard Edition) is now free until April 25th @ 08:00 HRS [GMT]. Normally £23.09. Requires a UbiSoft registration (free).
Note: Despite several attempts using different web browsers, I found that the only means by which I could acquire this free game was via the UPlay Client software:
1. Launch the UPlay client.
2. Select 'Games' on the top-left. On the next screen you'll see your acquired games, aka 'My Games'.
3. Now select 'Free Games' near the top middle - you will then see Assassin's Creed Unity listed. Click on it.
4. The resulting screen allows you to associate the game with your account. Once this is done a confirmation message will appear.
5. If you now go back to 'My Games', you should see that Assassin's Creed Unity has been added to your account.
Hope his helps