Gridiron GM

Build a dynasty. Live every decision. Watch it happen.

Gridiron GM is a from-scratch NFL-style general manager simulation built by one developer, deep enough to sit next to Football Manager and Out of the Park Baseball, and it runs entirely in your browser with zero install.

You're not just clicking "sim season." You're negotiating contracts down to the incentive clause, scouting a draft class through a real Combine Week, deciding whether to call a fake punt on 4th-and-2 in your own coached games, and watching a custom WebGL 3D engine play out every snap with live weather and a real broadcast layer calling the game around you.

What's actually in the box:

- A real sim engine, not a black box. Every play resolves from matchup-specific formulas: archetype-vs-archetype fit, weather and road-venue identity, fatigue and snap-count rotation, momentum and clutch performance, and a full special-teams phase. Real pre-snap penalties are rolled by your actual position coaches' discipline, not a coin flip.

- Coach the game yourself, if you want to. Step into a live, interactive play-calling mode: call your own offense and defense, make the real 4th-down go/punt/kick decision, and decide whether to kick the extra point or go for two.

- Scouting and the draft, done honestly. A genuine fog-of-war system with scouts who have real, learnable biases, a real Combine Week event with testing standouts and a scarce pool of invites, and individualized, per-prospect recommendations.

- A contract game with teeth. Real salary cap math, dead money, void years, restructures, franchise tags, no-trade clauses, incentive true-ups, and negotiations that remember how you treated a player.

- Coaches who actually coach differently. Every position coach carries a real developmental philosophy, some skew growth toward physical tools, others toward technique and football IQ, and it's a real factor in who you hire.

- A league that remembers. Press conferences with real stakes, season-long storylines, rivalries, and a full history/records/dynasty tracker.

- Mod-friendly. Export your whole league's custom team names, cities, and colors as a shareable file, hand your rebrand to a friend, or download someone else's.

- The full career arc. High School to College to Draft talent pipeline, GM reputation and job market, league expansion, franchise relocation votes, and an actual "Become the Owner" endgame once you've built something worth owning.

This is a solo project, actively developed. All teams, players, and leagues are fictional (no real NFL/NCAA branding), this is an original simulation, not a mod of anything licensed.

Play free. Pay what you think it's worth. Every bit of feedback shapes what gets built next.