Yes - Dreamscape is free to play!
Dreamscape is a free-to-play game! Your child/student is welcome to play Dreamscape, for free, forever.
Dreamscape Premium Plan
Dreamscape does come with the option of a paid premium plan for access to more in-game features and accessories as well as enhanced assignments/reports and a class mission feature for educators. Please visit our article What is a Teacher Premium Plan for additional information on our new Premium Plans.
Note: We have found that Dreamscape players with a membership play 6.6x more than players without