Shmup with a day-night cycle and simulated weather cycles.
JRPG with a day-night cycle and simulated weather cycles.
1V1 fighting game with a day-night cycle and simulated weather cycles.
Survival horror with a day-night cycle and simulated weather cycles.
Adventure game with a day-night cycle and simulated weather cycles.
Puyo Puyo clone with a day-night cycle and simulated weather cycles.
Paper Mario except he's not paper and jumps around more.
Mostly the latter point.
But what's actually new is having three swappable characters with unique abilities, centered around speed, power, and a middle-ground character.