Here, I'll give mine for an example:
SKYLANDERS: CRYSTAL GEMS
A Skylanders crossover game with Steven Universe.
After his most recent defeat, Kaos has found himself across the cosmos and winding up on the Gem Homeworld. He convinces the Diamond Authority to bring him back to and help him conquer all of Skylands, not knowing of the Authority's true intentions for Skylands. Seeing this new threat, Portal Masters must call upon the Crystal Gems, both familiar and new, to stop Kaos and the Diamonds and save Skylands once again!
Gimmick: The game features ten playable Gems (Amethyst = Magic, Garnet = Earth, Pearl = Light), and also features ten Elemental Shards that... Actually I haven't really thought to hard on this gimmick.
