Play the 20-0 Game. Draft 12 NFL Legends. Go Undefeated.
Spin all-time NFL teams, draft twelve legends, and run a 20-game season. Our 20-0 game is a free, browser-based NFL roster challenge built for football fans.
🏈 Play 20-0How the 20-0 Game Works in Three Steps.
Inside the 20-0 Game.
Every round of our 20-0 game lands on an all-time NFL team and a decade. The mockup below is real — same look you see in play.
Six on offense, six on defense, two flex spots. Pick one legend per spin, fill any open slot the position fits.
Seventeen regular weeks plus Wild Card, Divisional, Conference Championship, and Super Bowl. Twenty wins is perfect.
Every roster is graded S to F by projected wins. Going 20-0 lifts a Super Bowl and lands you on a daily leaderboard.
All 32 NFL Teams in the 20-0 Game.
Every NFL franchise is part of the game's draft pool. Start a run to find which team and era lands on your next spin.
The football ideas behind the game.
Our editor studies the teams, seasons, and roster decisions that make an undefeated run so difficult. These original guides explain the history and the model before you draft.
The 10 Greatest NFL Teams of All Time, Ranked
A ranked breakdown of the most dominant single-season teams in NFL history — from the 1985 Bears to the 2007 Patriots — and what made each nearly unbeatable.
Read the guide →Why the 1972 Dolphins' Perfect Season Still Matters
The only perfect season in NFL history: how the 1972 Dolphins went 17-0, why it has never been repeated, and what it means to go undefeated.
Read the guide →The Best NFL Defenses Ever, Ranked
Ranking the most dominant defenses in NFL history — the 1985 Bears, the Steel Curtain, the Purple People Eaters — and what separated them from the rest.
Read the guide →See How a Strong Run Is Scored.
Illustrative scores show how wins and roster strength appear on the leaderboard. Open the live board for current results.
Three Ways to Play the 20-0 Game.
20-0 Game FAQ.
What is the 20-0 game?+
Our 20-0 game is a free, browser-based NFL roster builder. A slot machine spins to an all-time team and era, you pick twelve legends, and our engine simulates a 20-game NFL season. Going 20-0 means winning a Super Bowl and topping our daily leaderboard.
Is the 20-0 game affiliated with the NFL?+
No. This 20-0 game is an independent fan project. NFL team names, league name, and player names appear under nominative fair use for identification only. There is no commercial relationship with the NFL or any franchise.
How are 20-0 game simulation results calculated?+
Every player carries an era-normalized rating. Your offense and defense ratings shape a seeded 20-game simulation that produces your final record, grade, and points. While you draft, the game also runs many quick simulations to estimate your projected record and perfect-season odds.
Why does the 20-0 game run 20 games?+
Seventeen regular-season weeks plus three playoff rounds (Wild Card, Divisional, Conference Championship) plus a Super Bowl equals twenty. Going undefeated through all of them is what gives this 20-0 challenge its name.
Can I save my 20-0 game run?+
Yes. Every completed roster is auto-saved to a global leaderboard. Add a nickname on your result screen so other 20-0 game players can see who built that roster and where it ranked.
Why do 20-0 game player avatars look generated?+
We don't license or use real player photos. The avatars are deterministic fictional game artwork — the same player ID gets the same avatar — and are not intended to depict a real player's likeness.
Does the 20-0 game work on mobile?+
Yes. Our 20-0 game runs in any modern browser, so iPhone, Android, tablet, and desktop all play it equally well. No download, no signup, no installs. Pick it up on a phone, finish it on a laptop, share that roster anywhere.