In case you don't know there's a  website called humble bundle. They sell packs of games discounted and the money goes to charity, well worth a look cos you can pick up some bargins. It's fully legit and typicly the stuff is redeemed through steam (used it fair few times myself)

Additionaly now and then they give out free games,

 

https://www.humblebundle.com/store/the-bureau-xcom-declassified?linkID=&mcID=102:5a1f4eaad6ab4e4d7c79b4f9:ot:56e301ae733462ca897cd1f5:1&utm_source=Humble+Bundle+Newsletter&utm_medium=email&utm_campaign=2017_11_30_thebureau_xcomdeclassified_storefront&utm_content=Banner

 

so dip yer bread :D

Love humble bundle! They have xcom free at the minute. Grabbed so many games that I don't need due to them. Thier.montjl subscription offers up good value occasionally too.