Interactive guides to how things work
Visual explainers that take one subject and work it out completely — the rules, the history, the trade-offs.
Soccer
The laws, shapes, competitions and money of the world’s game.
- European club football · 1955/56 – 2026/27
The continental machine
How the Champions League, Europa League and Conference League fit together: qualification, coefficients, the calendar, and every final since 1955.
socceruefachampions leagueeuropa leaguehistory7 sections · - The transfer market · 1893 – today
The price of a player
How football transfers really work: windows, fees, add-ons, loans, Bosman, amortization accounting, PSR and FFP — and every record fee since 1893.
soccertransferstransfer marketffppsrfinancehistory7 sections · - An interactive field guide to formations
The Shape of the Game
How soccer formations actually work: the catalog of shapes, what each trades away, how they morph between phases, and why no formation is best. Interactive.
soccertacticsformations8 sections · - Premier League · 1992/93 – 2026/27
Ups & Downs
Every Premier League club’s promotion and relegation history, 1992–2027: who yo-yos, who fell to League Two, and who never came back. Interactive timeline.
soccerpremier leaguehistory2 sections · - An interactive companion to Law 11
Offside, completely explained
How the offside rule actually works: the two-part test, why level is onside, and why only the moment of the pass matters. Interactive scenarios and a sandbox.
soccerrulesrefereeing3 sections ·
American football
How the NFL is built: rosters, contracts and the salary cap.
Basketball
What the NBA’s rulebook lets a team buy, and what it refuses to sell.