Getting free games is always good, and Humble Bundle has been doing a stellar job of giving decent titles for free, just like they offer games on bundles to people are throwaway prices (so be sure to check around the bundles, there is a racing bundle available now for racing fans). The game on offer today is The Bureau : XCOM Declassified.
Head here for the game :
https://www.humblebundle.com/store/the-bureau-xcom-declassified
Enjoy fighting aliens in the 90’s!