Game Based Learning for Science

Legends of Learning is a game-based platform that offers Life Science, Earth Science, and Physical Science activities that are standards aligned.  This GBL (game-based learning) resource is suitable for elementary and middle school students.
Curriculum focuses on vocabulary, discussion questions,  and concepts for teaching or reinforcing skills.  An example of learning objectives for Life Science at the elementary level are shown below.
Accounts for teachers are free. Playlists can be created and then assigned to the class, groups, or individual students.  Take a look.  This would be a nice resource to use in a blended learning environment.