Okay, so here is the idea I had while playing Spore. You would start out small and try to grow into a large creature.
1. So, you could kill another player and their dead body would break into parts, and stay there. You would click the parts and you would have eaten +1 food.
2. If you wanted to be an herbivore, you would click a fruit/veggie and you would have eaten +1 food.
3. As you grow into a bigger and bigger creature, you would gain new attacks and defenses.
4. If you were a large monster, you would be prohibited from killing and eating the small creatures. Like say, if you were 4-5 growth sizes ahead of the creature, you would not deal any damage to it.
5. There would also be zombie like bots that wonder around. If it was an herbivore it would wonder around and be defensive, no offensive. Carnivores are the opposite. They would be offensive and defensive. Omnivores would be the same as carnivores, just able to eat plants.
So, that is the basic idea of the Growth mod. IT would mainly be designed to work like Spore. I don't know if this is possible or not but it would be really nice if we had this. SO give me your feedback and opinions and feel free to criticize.