The peaceful monster forest was invaded by the dreadful heroes! Become a valiant great devil. Protect the peace of the forest! Merge your monsters! Set your favorite lineup! Protect your castle! Wipe out all invaders! Game Features: ~~ Addictive merger game ~~ ~~ Powerful tower defense game ~~ ~~ Roguelike skill selection ~~ ~~ Super fun casual game ~~ ~~ Easy and interesting strategy gameplay ~~ Strengthen your monsters and evolve into invincible soldiers!