17-0 is a free browser game where you draft a roster of pro football legends from across every era, then simulate a full season to see if your team can do the one thing almost no team ever has: finish undefeated.
The name is a reference to the one number every football fan understands. A modern pro season is 17 games. Going 17-0 means a flawless run — no losses, no off nights, no bad bounces. Since the 1972 Dolphins, the closest call was the 2007 Patriots, who went 18-0 before losing Super Bowl XLII. That near-miss is the emotional core of this game: everyone knows how hard perfection is, and 17-0 lets you chase it yourself by assembling the greatest team in football history and testing it against a full schedule.
You are not managing a single franchise or a single season. You are drafting across all of football history — a quarterback from one dynasty, a pass rusher from another decade, a shutdown corner from a completely different era — and welding them into one all-time roster. Then the simulation tells you, week by week, whether the team you built is actually good enough to run the table.
A full game takes about two minutes. There is nothing to install and no account required — you can start drafting the moment the page loads.
New here? The full How to Play guide breaks down the rules, positional scoring, and every game mode in detail.
The result is not random. Every player carries a rating that reflects how dominant they were at their peak, and the season engine combines those ratings into a team strength that determines your win probability in each game. A handful of factors decide whether you go undefeated:
The baseline is simple: better players win more games. A roster stacked with all-time greats will beat a roster of merely good players most weeks. But raw talent alone will not get you to 17-0.
Not every position moves the needle equally. A generational quarterback or a game-wrecking pass rusher shifts more outcomes than an average starter at a lower-leverage spot. Knowing which positions to prioritize is a big part of the skill.
A team is only as strong as its softest spot. Loading up on offense while ignoring your secondary leaves a hole that good opponents will exploit — the engine applies a penalty when your roster has an obvious weakness. Going undefeated rewards balance, not just a few superstars.
The engine rewards one specific kind of fit: a quarterback paired with a wide receiver or tight end from the same franchise and the same era. Each such pass catcher adds 2 points of team strength, so a quarterback with one matching receiver and one matching tight end earns up to +4. It is a small edge, but it is the kind of connection the best offenses in football history had.
Perfection is hard on purpose. A few principles separate the rosters that run the table from the ones that stumble in Week 11:
For a deeper breakdown, read the Simulation Guide, which explains how the 17-0 simulation works, or see How to Build the Perfect NFL Roster for drafting strategy.
Yes. 17-0 is completely free and runs in any modern web browser on phones, tablets, and computers. There is no download and no account required to play.
No. You can play instantly with no account. After each season your result is posted to the leaderboard under an anonymous player ID. A display name, an email so we can restore your streak by hand if you contact contact@perfect170.com, and daily reminder notifications are all optional. See the Privacy Policy for details.
No. 17-0 is an independent fan project. It is not affiliated with, endorsed by, or sponsored by any professional football league or its member clubs. Player names and historical statistics are used for entertainment purposes only.
Pro Scout hides all player ratings and stats during the draft, so you are picking on football knowledge alone rather than reading numbers off the screen. It is the harder, more satisfying way to play.
It is a once-a-day shared draft challenge. Everyone gets the same spins that day, ratings and stats are hidden as in Pro Scout mode, and there are no respins. Because everyone faces the same draws, your result goes on a daily leaderboard that compares like with like.
The season engine converts your drafted roster into a team strength based on player ratings, positional value, roster balance, and chemistry, then simulates 17 games. Stronger, better-balanced rosters win more often — going 17-0 is difficult by design.
Each round, a random pro football franchise + era is spun for you. Choose one player from that team's peak to join your all-time roster. In Classic and Pro Scout you get 2 respins per game; the Daily Eye Test and Challenge Mode have none.
Fill all 10 positions: QB, RB, WR, TE, OL, EDGE, DT, LB, CB, and S. Eras you've already drafted from won't come up again until all seven have been used.
After the draft, your team simulates a 17-game season. Player ratings, positional balance, and team chemistry all determine your record. Same roster always produces the same result.
If your QB, WR, and TE are from the same franchise and era, you earn a chemistry bonus — up to +4 team strength. A cross-era roster of superstars with no chemistry can lose to a cohesive unit that played together. The 1972 Dolphins didn't have the best players. They had the right system.