I've started up a competitive strategy game over on the Paizo forums, where each player is a god battling for dominance in a 20x20 grid world map. It features varying elevation and biomes, albeit in a rather simple fashion. I figured the mappish sorts hereabouts might be keen to join in!
Check it out! (Note: You will need a user account there in order to join.)
If anyone wants to take the rules and run their own Divinity Forge (or derivative) game here, I'm cool with that. Since the google docs linked are publically shared, you should be able to make copies of them freely.