If you own a PlayStation 4, PlayStation 3, and PlayStation Vita, here's how Don't Starve's Cross-Buy works on the PlayStation Network.
I own Don't Starve: Console Edition (but no Reign of Giants) on PS4, how does cross-buy work for PS3 and PS Vita?
If you own Don't Starve: Console Edition but do not have Reign of Giants on PS4 you'll be entitled to receive Don't Starve: Giant Edition for free on the PS3 and on PS Vita.
I own Don't Starve: Console Edition plus the Reign of Giants expansion on PS4, how does cross-buy work?
If you own both Don't Starve: Console Edition and the Reign of Giants expansion on PS4, you'll be able to receive Don't Starve: Giant Edition for free on PS3 and on PS Vita.
I own Don't Starve: Giant Edition on PS Vita or PS3, how does cross-buy work on PS4?
If you purchase Don't Starve: Giant Edition on PlayStation Vita or PlayStation 3, you'll be entitled to receive Don't Starve: Console Edition for free (but without Reign of Giants expansion) on PS4.
Don't Starve: Console Edition / Reign of Giants / Giant Edition European Release Regions:
Australia,Austria, Bahrain, Belgium, Bulgaria, Croatia, Cyprus, Czech Rep, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, India, Ireland, Israel, Italy, Kuwait, Lebanon, Luxembourg, Malta, Netherlands, New Zealand, Norway, Oman, Poland, Portugal, Qatar, Romania, Russia, Saudi Arabia, Slovakia, Slovenia, South Africa, Spain, Sweden, Switzerland, Turkey, UAE, UK, Ukraine.
I own Don't Starve: Console Edition (but no Reign of Giants) on PS4, how does cross-buy work for PS3 and PS Vita?
If you own Don't Starve: Console Edition but do not have Reign of Giants on PS4 you'll be entitled to receive Don't Starve: Giant Edition for free on the PS3 and on PS Vita.
I own Don't Starve: Console Edition plus the Reign of Giants expansion on PS4, how does cross-buy work?
If you own both Don't Starve: Console Edition and the Reign of Giants expansion on PS4, you'll be able to receive Don't Starve: Giant Edition for free on PS3 and on PS Vita.
I own Don't Starve: Giant Edition on PS Vita or PS3, how does cross-buy work on PS4?
If you purchase Don't Starve: Giant Edition on PlayStation Vita or PlayStation 3, you'll be entitled to receive Don't Starve: Console Edition for free (but without Reign of Giants expansion) on PS4.
Don't Starve: Console Edition / Reign of Giants / Giant Edition European Release Regions:
Australia,Austria, Bahrain, Belgium, Bulgaria, Croatia, Cyprus, Czech Rep, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, India, Ireland, Israel, Italy, Kuwait, Lebanon, Luxembourg, Malta, Netherlands, New Zealand, Norway, Oman, Poland, Portugal, Qatar, Romania, Russia, Saudi Arabia, Slovakia, Slovenia, South Africa, Spain, Sweden, Switzerland, Turkey, UAE, UK, Ukraine.