Playstation Plus Instant Game Collection (Jan 2014):
Vita: Smart as (1.4GB), Worms Battle Islands (89.6MB)
PS4: Don't Starve
PS3: Devil May Cry (6.5GB), Bioshock Infinite (6.4GB), Brothers: A Tale of Two Sons (625MB)
The January 2013 Instant Games Collection promo is in the ps store. I put the titles in the thread title to give everyone a heads up. Good thing I didn't re-buy Bioshock or purchase the other games yet. Brothers is currently on sale on xbox, steam, and eu psn but now I can get it for free.
Amazon Android App Store (Live NOW):
Sonic 2 & Angry Birds Star Wars 2 are among the free apps @ Amazon