A homework assignmentthat became an obsession.

A father was helping his sixth-grade daughter with a history lesson when something struck him: he remembered the material from his own school days, yet he was embarrassed by how much he had forgotten. He kept the textbook and started reading it himself. He found himself enjoying the simple lessons, rekindling knowledge he had long ago let fade, and wondering if others might feel the same spark of rediscovery.

In the smartphoneless days of the early 2000s, his entertainment on long defense-department flights was always a book. But flying home at night, inside a dark cabin, there were hours to think. It was during those quiet miles above the clouds that the entire structure of Timeline came to life: the 7 × 7 game matrix, the seven color-coded categories, the time-themed tokens, and the rhythm of racing toward a checkered finish.

The concept was clear. What remained was the work: thousands of questions spanning human history, each carefully sorted and balanced. He tried to patent the full game with the U.S. Patent Office in 2016; the request was denied. Undeterred, he secured a patent for the 7 × 7 playing field in 2019. The board, at least, was officially his.

What began as one father's homework session grew into a family project. His family has been alongside him every step of the way, carrying the work forward with patience, pride, and a lot of late-night research.

Now retired, the creator has made Timeline his focus. He imagines an app you can enjoy quietly wherever you have a moment; a game you challenge your friends to; a party game played with a group; an educational tool used in classrooms; and, one day, the most popular game show in the United States. He calls it the game of the 21st century. After playing it, we believe he may be right.