Here is our example of the "bucket category sort" game option (click green "play" button at top so you can preview it):
Here is our example of the "sequences" game option (click "play" button at top so you can preview it): http://www.brainrush.com/lesson/amoeba-sisters-name-that-monohybrid-cross
If you search the public library in BrainRush, you will see an assortment of all types of games (including cards and hot spots) that are already pre-made. Many are excellent for all types of science.
If you set up a class, it even will keep track of how your students are doing on mastery! Yes, we are definitely placing this one in our "formative assessment" category.