Update: The PS3 is no longer relevant, the Vita has its own thread for dedicated discussion, and a dedicated thread for PS+ games doesn't make as much sense today as it did 5 years ago, so I'm attempting to transition this thread into a discussion place for PS4 games.
Small games, big games, tall games, short games. Whatever your taste, if you can play it on PS4 and it doesn't have its own thread, talk about it here.
Keep the talk about headphones, firmware, PS4 vs PS4 Pro, 4K, and headphones in the main PS4 thread. This one is for the games.
Link to PSN store: https://store.sonyentertainmentnetwork.com/#!/en-gb/home/main
UPDATE: Handy link to all of the current free games for PS+ members: https://store.sonyentertainmentnetwork.com/#!/en-us/free-games/cid=STORE-MSF77008-PSPLUSFREEGAMES