A honeycomb of thirty cells, each with a Formula 1 category: a nationality, a team, a win at a particular circuit, more than a hundred races. You pick a cell and name a driver who fits it. The board is the same for everyone each day.
If the driver you name also fits free neighbouring cells, you claim them in the same move and they score as a combo: one cell is worth 1, two are worth 3, three are worth 6 and four are worth 10. If he fits neighbouring cells you already own, they heat up and add a point each. Every miss costs a point, so throwing random names is expensive.
Before a board is accepted, every cell is checked to be satisfied by at least five drivers from 2000 on, and most pairs of neighbouring cells to share at least one driver who fits both; otherwise combos would never happen. That way it can be completed without knowing the drivers of the fifties, which was the complaint about the first version.
If you are signed in, your game goes into the day's leaderboard. The server does not trust the score sent by the browser: it replays your moves one by one with the same rules and stores what it gets.
What the simulator says about what you have just played, measured over thousands of seasons.