About Sports Game Simulator

Sports Game Simulator is a small, free browser tool with one job: take two teams and return a believable finished game.

Why it exists

Most matchup tools want something from you first — an account, an email, an app install, or a subscription. The question "how would this game go" is a two-second question, and it deserves a two-second answer. So the simulator loads with the controls already on screen, runs locally on your device and shows the result in the same window.

What it covers today

American football is the first league the model handles, because football scoring has a rhythm that can be reproduced honestly: possessions, touchdowns, field goals, a clock. Every current NFL team is in the list, and any pairing can be run at a home venue or mentally flipped to a neutral one.

Baseball and college football are next. They are not copies of the football model — a baseball game is a sequence of innings with a different run distribution, and college football needs its own rating scale — so each one gets its own scoring logic rather than a reskinned version of this page.

How it is built

The whole simulator is a static page with client-side JavaScript. There is no server round trip when you press the button, which is why results appear instantly and why the page still works on a poor connection.

Two inputs drive the model: a coarse strength rating per team and a home-field advantage of roughly 1.7 points. Win probability comes from replaying the matchup a thousand times. The full breakdown is on the how it works page.

What it deliberately does not do

• No betting lines and no betting advice. The output is a scenario, not a forecast.
• No claim of accuracy against real results. Ratings are editorial estimates and are not on an update schedule.
• No accounts, no tracking beyond basic visit counts, no email collection.
• No affiliation with the NFL, MLB, the NCAA or any team. Team names are used only to describe a matchup.

Feedback

Wrong team name, a matchup that will not run, or a league you want added — the contact page is the place for it. Messages that describe a specific broken matchup are the most useful, because they are the easiest to reproduce.