Slugterra: Slug it Out 2

Connect to other Slugslingers; Add friends, duel, and send gifts! Become the strongest slugslinger around with a powerful army of slugs! Solve puzzles, level up slugs, and duel your friends in this adventurous slug shooter game, Slugterra: Slug it Out 2! Travel through the different caverns, full of stories, enemies, and prizes, though be aware that some of these caverns are only available for a limited amount of time, so you'd better hurry and explore them before it's too late. There is a whole different world underneath the surface, known as Slugterra! Explore this luminous, high-tech world and venture into the nooks and crannies of the 99 Caverns. Along the way, you'll find slugs that have special talents that let them transform into powerful and magical beasts! Work with your slugs to defeat any enemies by training, evolving, and maybe even unlocking their fusion power! You may even be able to befriend the legendary ancestors of all the slugs, the Elementals!