The official PlayStation Blog has unveiled the games that are free to download this month for all PlayStation Plus members. There are a total of four free games for the PlayStation 4, two for the PlayStation 3, and two for the PlayStation Vita.

For the PS4, gamers with PlayStation Plus membership will be able to download "Metal Gear Solid V: Ground Zeroes." This title serves as a prologue to the upcoming "Metal Gear Solid V: The Phantom Pain," which is scheduled to be released in September. "Ground Zeroes" was originally released in 2014 and it lets players take control of Big Boss as he infilitrates a black site in Cuba. 

The second free title is "Skulls of The Shogun: Bone-A-Fide Edition," a turn-based tactical game featuring undead samurai warriors. Gamers can collect newer members to grow their army and battle even more undead enemies. 

"Super Exploding Zoo" and "Futuridium EP Deluxe" are being offered for both the PS4 and the PSVita. The former is a top-down shooter but instead of guns and bullets, gamers need to protect eggs by firing live animals. The latter, on the other hand, is an arcade flight shooter-up similar to early "Star Fox" games. 

PS3 gamers with PlayStation Plus membership will be able to download "Call of Juarez: Gunslinger," an FPS title set in the Wild West; and "Cloudberry Kingdom," a 2D platformer. The team behind "Cloudberry Kingdom" designed an AI that could spawn near-infinite number of levels at any difficulty option, making it one of the most ideal platformer titles for casual and veteran gamers alike. 

The games have been available since June 2 and will continue to be offered until the first few days of July when Sony officially rotates the list and offers another batch of free games for players to download and play. Last month, PlayStation Plus members saw the likes of "Guacamelee Super Turbo Championship Edition" and "Murasaki Baby."