The world is young, a mere 2.5 billion years. Life has thrived for almost a billion years up to this point, but now it is about to explode.

The Rules are as follows:
1. Evolve in increments
I do not want to see a worm suddenly sprout legs and walk around, make me believe there's a reason this happened

2. Keep creatures simple
Complex art is fine and lovely, but everyone should be able to meaningfully change any creature they desire and not be gatekept by drawing skill

3. Use a template
I don't care if you use mine or your own custom template, but please for the love of god, stay consistent

Game Mechanics

1. World Events
there's a list of milestones that will eventually hit the world, one after the other, giving everyone a chance to try and evolve new adaptations and go places where some species were previously not represented.

2. Extinctions
I will periodically roll a d100 to determine what level of extinction event will hit the players.
the most common and least destructive are Minor Extinctions - only affecting a small number of species, as such the game progresses normally except for the affected.

Any extinction level greater than "minor" severely affects the genepool of all lifeforms, and will constitute the only time where major physiological changes are accepted
(i.e worm sprouting legs)

The rarest and most powerful extinction events (Ultimate) will give you the choice between a complete restart from 4 basic survivors, or game over

3. Finish
the game will end when either Sapience (i.e society) has been achieved, or when every last organism on the planet is dead