Open the track on the TV. Everybody goes to the address (or scans the code) and types the 4 letters. Up to 12 people.
In the lobby, everybody types horse names on their phone. The horses in each race get names picked from what you typed.
Before each race you get time to bet: WIN (first), PLACE (first or second) or SHOW (top three). The odds are on the tote board. A long shot pays a lot. Run out of money and the track lends you some. It's a bad deal.
Pay to buy any horse and rename it. It's yours: it runs every race, and you get purse money when it finishes in the top three. Somebody can buy it from you (they pay you).
Espresso Oats (faster), Second Lung (doesn't tire), Rocket Shoes (fast out of the gate), Bad Attitude (a big finish), Lucky Foot (chaos misses it), and A Tiny Hat (does nothing, the crowd loves it).
A few times a race your phone gets three choices: a goose, a tornado, the finish line moves, a horse finds a bicycle, Dirt Pam... Most votes wins and it happens. Pay $20 for an extra vote.
A computer voice calls the whole race like a real track caller, chaos included. The Voices slider sets how loud it is.
Every winner goes into the Hall of Champions and shows up in later races, upgrades and all.
Type horse names on your phone. They'll be running tonight.