Grand strategy operates at a scale no other genre attempts. Players manage provinces, not units. They arrange marriages, not just battles. A rebellion in the east is suppressed while a succession crisis unfolds in the capital and an invasion threatens from the north. Everything is happening at once.

Summer Engine helps you build the map, nation systems, event chain, military, and economic model through conversation. You design the historical or fictional setting and the rules of the world. The AI scaffolds the interlocking systems that generate the emergent history your players will create.

The best grand strategy games produce stories that players want to tell. A dynasty that survived three succession crises and finally produced a great ruler who reunited a fractured empire. Design the systems that generate those stories, not just the win condition.

• Designers inspired by Crusader Kings or Victoria who want to build a politically rich strategy game.
• Teams building a historical or fantasy grand strategy with a defined scope and setting.
• Studios targeting the Paradox audience who wants to find a more focused or accessible alternative.
• Solo devs creating a compact grand strategy that captures the political depth in a shorter format.

• Political Sandbox

  Build a map with 20-30 regions, political entities with rivalries, and event systems that generate crises without scripting them.

• Dynasty Game

  Create a ruler succession system with traits, relationships, and inheritance laws that generate political drama across generations.

• Historical Scenario

  Build a specific historical period with accurate starting positions and event chains that let players diverge from history.