Among the features, which we covered here, is the ability to evolve your Digimon by engaging in healthy behavior (the bracelet monitors step counts and heart rates), as well as a battle system that allows wearers to train with each other. Unfortunately, it's only slated for Japan, though a release is pretty imminent.
“Digimon Survive sees a brand-new group of teenagers, led by Takuma Momozuka, get lost on a school camping trip, finding them transported to a strange new world of monsters and danger. ... players’ choices throughout the game will impact the evolution of their monster allies, and the final ending. Battles in the game are fought in 2D, in a more classic SRPG style.”