PlayStation has announced their PS Plus Games for September. They include the fun Infamous: Second Sun and mildly addicting Hue.
Worth noting that the UK gets Child of Light instead of Strike Vector EX. Be sure to download that game, it kicks ass.
Infamous: Second Son
Strike Vector EX
Monster Jam Battlegrounds
Vita (crossbuy with PS4)
Sky Force Anniversary (crossbuy with PS3 as well)