Wait, Dead Island: Riptide Isn't on the Dead Island: Definitive Collection PS4 Disc?

Nope, it's download only

Dead Island: Riptide Preview - Gamereactor

Dead Island Definitive Collection Review - Saving Content

Dead Island Definitive Edition for PS4 only includes first game on

Dead Island 2

Dead Island 2 Xbox Series X Review - Was It Worth the Wait?

Dead Island review

RETRO Review - Dead Island: Riptide (PS Now/PS3/PS4)

Paradise meets Hell Welcome to the Zombie Apocalypse experience of a lifetime and now more beautiful than ever. Caught in the midst of an epic zombie

Dead Island Definitive Collection Edition (PS4)

Cover Reveal – Dead Island 2 - Game Informer