Ecco the Dolphin: Defender of the Future is an action-adventure game developed by Appaloosa Interactive. It is the fifth and final title to date to be released in the Ecco the Dolphin franchise and is a reboot of the series. It was released in 2000 for the Dreamcast, with a version for the PlayStation 2 being later released in 2002. Defender of the Future received generally positive reviews from critics. A sequel, Ecco II: Sentinels of the Universe, was planned but later cancelled following the Dreamcast's discontinuation in 2001.