[Matt Drake]

Thank you for the suggestion. I have not played Circus Maximus, but it sounds cool.

I also enjoy Arena Maximus, from Fantasy Flight Games. While it does not even try to be Roman (there are dwarves and undead and orcs and a unicorn), it is a hilarious hoot of a chariot race. You can attack, block or ram your opponents, and you can crash, and you have to jump over obstacles or maneuver through difficult terrain. Going too fast costs you control, so if you speed through everything you can count on crashing.