Non original game: A Halo game that takes place from John's childhood to his training on Reach to his missions with Blue team all based off the Halo book. Too much stuff to talk about here and now so maybe I'll do that later.
Original game: Taking place in the year 1956, the Nazi's have just finished WWII by conquering Japan. North America, South America, most of Africa, and Australia are the only safe places left (and America never entered the war and Canada just gave up). China has expanded its empire to take up the middle east and those little countries beneath it such as Korea, Vietnam, Laos, and Cambodia etc and has made a truce with the Nazis not to attack each other. Suddenly, the Nazi's attack Hawaii from the coast of Japan and you take the role as an American soldier named Brock Morrison and your're fighting on the front lines. After reinforcements arrive and the Nazis retreat, you are awarded with a promotion to first lieutenant and you're ordered around the world to liberate former allies such as Britain, France, Russia, and Japan. You will also have to negotiate with neutral and/or enemy leaders to get what you think is best. Some of the neutral powers will be: (in order of lowest to highest difficulty) Canada-to join the liberation movement, Australia-to join the liberation movement, Mexico-to join the liberation movement, a Chinese officer to order his men to retreat off the north coast of Australia, a Nazi officer-to retreat his remaining men out of the UK, another Nazi officer-to stop the slaughter of the Japanese prisoners and to retreat out of Japan, Russia- to join the liberation movement and to become hostile against the Nazis and/or the Chinese, Winston Churchill (after liberating Britain)-to join the liberation movement (the reason he is so hard to convince is because 1.America never helped them during WWII 2. Because they have just come out of a war and they do not want to join another one, Chinese Commander- to create a truce pact and to let Allied forces through China to Russia to help liberate it, Chinese general-to become hostile towards the Nazis (this is one of the few negotiations where there is a representative from the Allies (you) and from the Nazis where you have to persuade the Chinese that you are a greater ally by 1. appeasement from America (gifts) 2. Persuasion (just words) 3. Show evidence (collected throughout the game) proving that the Nazis are going to do something that would negatively impact China. These negotiations are easiest when you have enough proof in one section (like a attack plan map on a torn piece of paper and the other half of the paper showing a Nazi officer signature) but appeasement can show how far you want to go to have someone as your ally. Oh, and it would be third person view with plenty of battles and negotiations, but also tons of free-roaming.