Daily Perfect Season Challenge

Build a roster. Go 20-0.

Spin all-time NFL teams. Draft 12 legends. Simulate a perfect season. Share your grade.

Play Now Today's Challenge Leaderboard →

How It Works

Spin. Draft. Simulate.

Spin a team + era

The slot lands on an all-time NFL team and a decade. 2007 Patriots. 1985 Bears. 1992 Cowboys.

Pick one legend

Choose one player from that team for the current position. Build offense first, then defense — 12 slots total.

Run the season

When all 12 slots are filled, we simulate a 20-game season. Go 20-0 to win the Super Bowl and top the leaderboard.

Modes

Three ways to play.

Free Play

Spin whenever. Random teams, random eras. Endless replay.

Play Now

Daily Challenge

Everyone gets the same spins today. New challenge at midnight ET.

Today's Roster

Gridiron IQ

Player stats hidden. Draft by name and reputation. For the real fans.

Test Your IQ

FAQ

Common questions.

Is this affiliated with the NFL?+

No. 20-0 is an independent fan game. NFL team names and player names are used for identification only under nominative fair use.

How are the simulation results calculated?+

Each player has an era-normalized rating. We sum offense and defense, run 1,000 Monte Carlo simulations of a 20-game schedule with playoff difficulty ramp, and compute your expected wins.

Why 20 games?+

17 regular season + 3 playoff rounds (Wild Card, Divisional, Conference Championship) + Super Bowl = 20 games to a perfect season.

Can I save my run?+

Yes. Every completed run is auto-saved to the global leaderboard. Add a nickname on the result screen so people know who you are.

Why do my picks have different avatars?+

We don't license real photos. Each player gets a deterministic generated portrait — same player, same face, always.

Ready to go undefeated?

SPIN