Spore Hero is a fascinating save-the-world adventure because you must constantly tweak your hero's attributes so that it can succeed in this world. If your character keeps drowning every time it falls into the water, you might want to figure out how it can evolve into a swimmer. If you can't get across a great expanse, you might want to add wings. And if you keep losing in combat against another, you might want to upgrade to body parts that serve as better weapons. But the key is that you are in control of what your hero looks like and what abilities it has.