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.
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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.