Spore... is weird. It's hard to rate it as a game, because it's not one game. It's several different underdeveloped games of varying quality. The cell stage is kinda fun, the creature stage is kinda fun, and the space stage is cool but quickly becomes super tedious. The whole thing is buggy as hell. It's basically a good way to spend an afternoon or a weekend.
You create life, you make a whole new creature in a planet sparking with new life, your creature evolves, becomes intelligent, you create tribes, you create civilization, YOU CONQUER THE WHOLE FUCKING SPACE JUST TO GET TO THE CENTER OF THE GALAXY. I really never had the time to go until the end of this game tho but it's one of my favorites for sure. It makes your creativity go wild when creating little monsters, or building, of cars, boats, and planes. And finally the spaceship! This game really warms my heart :)