A dream game. Obviously this means no limits at all.
Game based in 1920s world with a bit over the top dieselpunk theme to it just to stretch the ideas what is possible far further while keeping the world of the time as it is. Includes people which are such as sexist and brutish as the real folks from 1920s plus different cultures (europe, china, russia, africa, trumpland, middle east, india etc.). Has magic, telepathy, witches, gods, tech, aliens, multiple worlds that are 10x the size of arcanum. Has crafting system which is based on complete freedom and real physics. You can attach scissors to coffee mug and fill with kerosine and use that as a weapon. Eventually you can research (when you can people doing research for you) atom bombs, biological weapons and video games. Or go with magic, telepathy or whatever to their own maxiumums. Can combine magic and tech. Combine everything.
It is kind of a crpg where you can also play it turnbased isometric, realtime, 1st person, 3rd person and switch between all of those at any time. Unlimited number of followers, deep companion system where every npc has its own motivations and depending on your group dynamics you either choose what to do as a group or the leader chooses. You work your way up and finally getting to be a leader only to find you are just one step higher than where you started. Chaos is a ladder. You can of course kill every member of your group and spend the money on vr porn with magical lizards and dick sucking magic.
You can play as a combat character or speech based character. Your speech skills are just modifiers added to your own voice. Just like your physical attributes are just modifiers to your appearance (game requires laserscanned model of you nekkid body before you can play). All communication in the game happens with real people. Everytime you speak to npc you are speaking to a real human who was raised up from baby to be that character. You talk to the microphone and depending your speech skills the human on the otherside either hears very soothing voice telling him exactly what to do or some mindless babble about walls and mexicans. Game works on all languages and if you in the real world speak many languages then this is a benefit for you. If you speak sign language the npcs are mailed to you and you can then try to interact with them in person. You can take speech lessons or hire interpreters or whatever too.
The game scales up (not in difficulty necessarily but in sheer scale of options) as you get more money and power. Eventually you can control armies and nations. The game also includes complex economic model which allows you to become a stock broker or other wealthy entrepreneur. You can buy, design and build your own houses and eventually cities. Or you can destroy stuff for shit and giggles because destructive environment. You can acquire atom bomb and use it and then play the game as fallout. You can do genocides and remove all magic, telepathy or whatever from the world both in small scale (cities) or in large scale (nations, continents, the world). You can become powerful mage who can open gates to magical worlds. You can be a dictator of small nation or all nations.
Depending how you choose to play you can play as a mercenary with small group who just does combat, assassin who plays alone and eventually kills world leaders, you can start a crime syndicate and control the world with violence, you can play as a politician and become a dictator or ruler of the free world, you can become a industrial magnate who owns the world either by owning railways, newspapers, slaves or land. You can start building spaceships and fight interstellar wars or you can open magical gates to other worlds and enslave them for magical power. You can play as religious cult leader and swim in money and virgin pussy.
You can choose to support hitler and make germany great again. You can try to overthrow hitler or any other world leader. You can simply go hiding when ww2 starts or you can try to prevent it. You can make it start sooner and last longer. Or you can just use it as an opportunity to do something else. Also it's multiplayer game where everybody play on the same server.