Counterfactual

What is counterfactual history?

Counterfactual history is the disciplined version of a question everyone asks: what would have changed if one decision had gone the other way? Serious historians use it not to rewrite the past but to test causal claims. To argue that the Armada's defeat mattered is already to imagine a world where it won; thinking that world through carefully shows how much weight the event can really bear.

Done honestly, the exercise has rules: start from the documented record, change one thing a real person could actually have chosen, and follow the consequences without granting anyone impossible luck or foresight. Historians distinguish contingent moments, where one choice visibly redirected events, from structural forces that would have ground on regardless. All three scenarios here sit on genuine hinges.

How the game works

Each scenario opens with chapters that track what actually happened; then your choices take over, two or three per chapter, each leading somewhere different. Every chapter carries a collapsible historian's note separating fact from informed guesswork, and each of the 18 endings pairs a named epilogue with an honest plausibility rating, from what really happened to wildly divergent. Progress and discovered endings save in your browser.

The three scenarios

The Rubicon (January 49 BC). You are Julius Caesar with one loyal legion, a hostile Senate, and a law that makes crossing the river treason. Grounded in our essay What if Caesar never crossed the Rubicon?

Landfall (1492). You are Columbus in mid Atlantic when a storm shoves three small ships south of every chart. Grounded in What if Columbus had landed in Brazil?

Armada (1588). You are Elizabeth I as 130 Spanish ships enter the Channel and Parma's veterans wait at Dunkirk. Grounded in What if the Spanish Armada had won?

Frequently asked questions