Publisher PACKT is offering 1 free eBook every day directly from their site.
Each book is only available for a limited time, so you may want to sign up for their newsletter to make sure you don’t miss anything interesting.
This week is Unity Week, focusing on books which teach you how to use the Unity3D engine to create your very own games.
Each week has its own theme and works through the entire PACKT catalog including books on Arduino, Android, Office 365, PHO and much more! The theme weeks also offer discount deals on the books for that week’s theme.