Crysis 3 is having an open beta, THQ is no longer in business and Planetside 2 is having their Ultimate Empire Showdown! Enjoy.
Crysis 3 Open Beta:
http://www.crysis.com/us/crysis-3/beta
THQ Dissolved:
http://www.gamespot.com/news/thq-dissolved-6402838
Planetside 2 Ultimate Empire Showdown:
http://www.planetside2.com/ultimate-empire-showdown