An idea a friend and I were messing around with.

Name: Pending

Genre: Strategy/MMORPG

Rating: Teen (for complexity)

System: PC

Features:
Leveling up for all units.
units can be organized regimentally or singularily.
Increase in level increases skills of units and allows for more formations and ways to fight.
Many different monsters that can be tamed and sometimes even ridden.
Four different types of mystic powers (Divine Magic, Arcane Magic, Psionic Ability, Spiritual Energy)
About twenty cultures and thirty races to choose from.
Hundreds of options for customizing units.
Hundreds of premade spells to be researched.
Toolkit that allows players to custom-make their own weaponry and magic (for more advanced players)
Permanently mutable terrain upon the server.
Expansive world.
Diplomacy system based heavily upon player interaction.
About seven currencies that fluctuate in value depending on the power of the nations that use them.
Sophisticated AI that will allow your country to run itself while you aren't logged in due to the orders you set.
Ability to customize towns and structures, even specifically constructing a castle with the defensive perameters you yourself desire.
Enter and exit battles with a click of the mouse, allowing you to take control of any given army or leave them to the AI.
Different technologies that can be learned and taken to create newer units.
Hundreds of options for a customizable personal avatar. These features are randomized on all units to produce unique appearances for each individual character.
Heavy penalties imposed for attacking players significantly weaker than you, unless attacked first.
Several expansive servers to choose from.

(I may add more later if I remember)

Description: This game is basically a massive medieval fantasy roleplaying game. A player creates an avatar, picks a race, picks a culture, and jumps into a large world. As the leader of a country, they can choose to make all the day-to-day decisions, or they can preset the AI to act as they wish. Expansion of territory allows for more towns to be built and resources to be gathered. Game is constantly in motion, even when you aren't at your computer, and the AI keeps your kingdom running. Players are expected to interact with each other, choosing when to align and when to betray. As the overlord of their nation they each choose their own path, leading them to either victory or ruin. All terrain is alterable, the higher your spell research is, the more that can be done. Players might raise their land into the air, or sink it into the sea. While spells can be developed to alter terrain outside of one's territory, spells that counter such spells are developed sooner to allow other players the ability to counter it without too much difficulty. The changes to terrain are permanent, at least until someone else alters it. As an MMORPG of sorts, it is a continuous game that allows players ultimate flexibility in creating and managing their kingdom.