It is like Spore Creatures where the creature creation is concerned, to a point. Each part has its own stats and special abilities. Spore Creatures gave you more freedom with the creation aspect, however. Sizing, color schemes, placement, amount of parts..
This game has turn-based combat though, where Spore had real-time. Also, mini-games comprise a significant amount of the game. Spore Creatures didn't have any mini-games from what I remember.
Really this game is nothing like Spore, though. Just that you can create your monster. But Spore wasn't the first game to ever do that...
Metroid Food: OK! You teach me math, I teach you spelling! Buchu8Oolong: Can we start with a word for a pest that lives under bridges in western mythology?