My last post was accidentally deleted by staff so this will be a modified repost.
Kiasyn gave me an idea for a MUD based on Evolution (The Game). The basics of what I have in mind are as follows.
1) You will start the game a basic creature type (I haven't decided on how low a level yet)
2) *Experience Points* through adventuring will come in the way of spending evolution points.
3) As you acquire evolutions points you spend them modify aspects of your creation, or even add new things. (Limbs, immunities, etc)
4) The greater the difference of your change or modification from your current state, the more evolution points it will require.
This is of course just a very basic idea, but I am excited to get input on it and perhaps some more ideas for what would work well in such a system.