The PlayStation Blog has just announced the list of free games for PS Plus members in May. PS4 games include Tales from the Borderlands and Abzu, Blood Knights and Port Royale for PS3, and Laser Disco Defenders and Rider for PS Vita. Happy gaming!
Source: PS Plus: Free Games for May 2017
Playstation Logo photo attribution: By Defrtgy (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons