Supreme Ruler Ultimate is a real-time geopolitical and military strategy game built around guiding a nation through World War II, the Cold War, or a modern era. Its central challenge reaches beyond the battlefield: manage money and resources, develop the economy, and weigh social and military priorities while other nations remain potential partners or rivals.
Players can influence international relations through diplomacy, trade, espionage, and intimidation, while technology trades can support either civilian conditions or military strength. At the operational level, the game offers strategic and tactical control over land, air, and sea forces, with historically detailed armies represented down to the battalion level. Players can make decisions themselves or delegate some responsibilities to cabinet ministers; weather is also integrated into battlefield outcomes.
The play format ranges from objective-led historical or futuristic campaigns to set-piece scenarios and open-ended sandboxes, where players select a nation and victory condition.