What is Derby Decider?
Derby Decider is a free online horse race simulator that turns any decision into a photo-finish horse race. Add your contenders, send them to the gate, and watch an animated race settle it. No sign-up, no download, and it runs in any browser on phone or desktop.
How the horse race simulator works
Enter 2 to 20 runners, optionally weight the odds so some are likelier to win, then hit “Send to the gate.” Derby Decider runs a full simulated race on a live animated track, captures a photo finish, and shows the finishing order from first to last. Every race can use a seed, so you can replay the exact same race or keep it random.
Features
- Weighted odds so any runner can be a favorite or a long shot
- Custom racers you can name and add photos to
- A real animated race with a photo finish, not just a random number
- A shareable finish photo
- Free and private: no account, everything runs in your browser
Ways to use a horse race simulator
- Decide who pays the bill or takes the chore
- Draw a winner for a giveaway or raffle
- Settle a fantasy draft order
- Set turn order for game night
- Break any tie with more fun than a coin flip
Frequently asked questions
Is Derby Decider free?
Yes, completely, and no account is required.
Is the race fair?
Each race is randomly simulated. You can also set weighted odds, or reuse a seed for a repeatable result.
Does it work on mobile?
Yes. It runs in any modern mobile or desktop browser.
Can I make one racer more likely to win?
Yes. Turn on weighted odds and set each runner’s chances.
Are there secret racers?
Maybe? :)