That sounds like a joke until you see what he was actually doing.

Pratt was not a hobby game designer in the modern sense. He was a historian, military writer, translator, science fiction author, and naval enthusiast. He wrote about the Civil War. He wrote about sea power. He co-wrote fantasy with L. Sprague de Camp. He helped create the New York literary circle known as the Trap Door Spiders, the club that later inspired Isaac Asimov’s Black Widowers stories.

And in borrowed rooms, armories, apartments, and open floors, he built one of the great pre-commercial wargames.

The floor became the ocean.

The ships were models.

The referee was the machine.

The Game On The Floor

Pratt’s naval war game developed in the late 1920s and early 1930s. Unlike a normal board game, it did not fit on a table. The point was space.

The ships moved across open floor at a large scale, commonly described as one inch equaling one hundred feet. That let players measure range, turn ships, judge fire, and watch a naval action unfold physically rather than abstractly. A gymnasium floor was not a luxury. It was the board.

Players commanded fleets. They wrote orders. Ships moved. Guns fired. A referee measured, calculated, and resolved the combat. Range, shellfire, armor, and probability mattered. The players did not simply roll a die and accept a broad result. The system tried to make naval gunnery feel like a problem of distance, speed, angle, and judgment.

That was Pratt’s great move.

He did not make toy ships cute.

He made them mathematical.

The floor also changed the player’s body. A commander had to walk the ocean, bend toward ships, judge distance with a ruler, and feel how much empty space existed between fleets. That physical act made naval range legible in a way a small board rarely can. Distance stopped being an abstract number and became hardwood under your feet.

For a naval game, that was not decoration. It was pedagogy through movement. The lesson arrived through knees, shoes, rulers, measured pacing, and sightlines.

The Historian At Play

Pratt had the right kind of mind for this.

He was a popular historian, but not a casual one. He cared about how military systems worked. Naval warfare is not only ships shooting at each other. It is range estimation, formation, armor, shell weight, visibility, speed, doctrine, and timing. A battleship duel is a drama of inches and seconds stretched across thousands of yards.

Pratt wanted the game to respect that.

Earlier miniature wargames existed. H. G. Wells had published Little Wars in 1913. Fred T. Jane had developed naval wargaming before Pratt. Military Kriegsspiel had been around for generations. Pratt was not inventing wargaming from nothing.

His contribution was to bring naval simulation into a social, civilian, mathematically serious form.

That combination matters.

The game was not a military staff exercise locked inside an institution. It was not a children’s parlor game either. It was serious play for writers, historians, fans, and naval obsessives who wanted to argue with battles through movement and calculation.

That is a bridge.

The Referee As Computer

The most important part of Pratt’s design may be the thing that makes it hardest to imagine today.

The referee mattered.

Modern games usually try to put the procedure inside the components. The board, cards, charts, dice, and rules carry the system. Pratt’s game depended on a person who could measure, adjudicate, calculate, and keep the battle moving.

That sounds like a weakness.

It was also the source of the game’s power.

The referee could manage hidden or imperfect information. The referee could apply the gunnery formulas. The referee could keep both sides from seeing every consequence immediately. The referee was not just a rules reader. He was the operating system.

This is one reason Pratt’s game belongs in wargaming history rather than ordinary board-game history. It sits closer to Kriegsspiel, military simulation, and later referee-run campaign play. The game is not only objects and rules. It is procedure, trust, measurement, judgment, and adjudication.

That made the game demanding.

It also made it alive.

The Mathematics Of Fun

Pratt’s naval game became famous for the calculations.

Players did not simply announce that a ship fired and then roll for a cartoon hit. Gunnery had to account for range. Damage had to respect armor and shell effects. The game tried to produce plausible naval outcomes while still moving fast enough for people to enjoy.

This is where Pratt’s design becomes important.

He treated fun and rigor as compatible.

The players were not gathering because the math was easy. They were gathering because the math gave the battle weight. When a salvo landed, it felt earned. When a ship survived, it felt like armor and range had mattered. When a line of ships misjudged position, the floor made that error visible.

The game created drama because the physical space and the mathematical system agreed with each other.

You could see the distance.

Then the formula told you what distance meant.

The Social Machine

Pratt’s game was also a social invention.

Accounts of the game describe large gatherings, sometimes with many players and spectators, built around naval battles as performance, contest, and intellectual recreation. This was New York literary and historical culture turning military simulation into a night out.

That detail matters because wargaming later became a hobby culture.

Pratt’s floor games showed what that culture could feel like before the commercial hobby fully existed. People gathered around a shared rule system. Veterans taught newcomers. Arguments became part of the pleasure. The rules lived in practice as much as on paper.

The game was published during Pratt’s lifetime, including a 1940 book version, but its deeper life came through play, teaching, revision, memory, and reconstruction. Later editions and reprints kept the name alive for people who wanted to understand where civilian naval wargaming came from.

That is not the same as a mass-market hit.

It is a lineage.

The Limit

Here is the honest assessment.

Fletcher Pratt designed one famous game.

It was hard to run. It needed space. It needed models. It needed a referee who could handle the math. It did not become a normal boxed product on toy-store shelves. Most modern gamers have never played it. Many have only heard the name in wargaming history.

That limits the score.

But the limits are also part of why the game matters.

Pratt was not solving the problem of how to sell a cheap game to families. He was solving a different problem: how to make naval combat intelligible as a physical, mathematical, social event.

That problem shaped the wargames that came after him.

Simultaneous orders. Referee adjudication. Probability-based combat. Measuring real space. Treating the game as a model of historical forces rather than a decorative battle scene. These ideas did not begin and end with Pratt, but his naval game made them vivid for civilian players.

He gave later wargamers a picture of seriousness.

Not seriousness as grimness.

Seriousness as respect for the system.

What He Actually Built

Fletcher Pratt did not invent miniatures wargaming.

He did not invent naval history. He did not invent referee-run games. He did not create a modern commercial wargame company or a catalogue of titles.

What he built was one of the foundational civilian naval simulations.

He took the floor and made it an ocean. He took model ships and made them arguments about range and armor. He took a social gathering and made it a fleet action. He showed that a game could be recreational, historical, mathematical, and theatrical at the same time.

That combination is why he remains important.

In a later era, Avalon Hill, SPI, naval miniatures publishers, and military simulation designers would all work in a world where probability tables, simultaneous planning, adjudicated fog of war, and historical modeling were accepted parts of the grammar.

Pratt helped make that grammar feel playable.

Where To Find Him

Fletcher Pratt died in 1956, but the game did not vanish. His naval war game survives through published rule versions, reprints, historical discussion, and the memory of a pre-commercial wargaming culture that treated a gymnasium floor as a legitimate ocean.

His broader writing life is also worth remembering. Pratt was not only a man with wooden ships. He was a historian and writer whose imagination moved between military analysis, speculative fiction, biography, and social clubs full of other writers.

That range explains the game.

It took a historian’s respect for evidence, a writer’s sense of drama, and a player’s willingness to get down on the floor.

The ships are mostly gone now.

The floors are empty.

But the idea remains: if the model is good enough, a room can become the sea.

Fletcher Pratt proved it with rulers, wooden ships, and math.