PS VitaPS4 Dragon Quest Builders demo now available in Japan Try the block-make RPG a week before release. A demo for Dragon Quest Builders is now available for PlayStation 4 and PS Vita in Japan. A PlayStation 3 demo is not planned for release. The PlayStation 4 demo weighs in at 400mb, while the PS Vita demo is 173mb. Save data from the demo is not compatible with the full game.Dragon Quest Builders will launch for PlayStation 4, PlayStation 3, and PS Vita in Japan on January 31.