Roman War Games
Roman War Games are played by the Roman demigods and legacies of @Camp Jupiter, normally on the @Field of Mars. Just as the Greeks have Capture the Flag, the Romans have war games.
Known Games
Deathball: Deathball is a game similar to Paintball. However, it is used with acid, poison, and fireballs as weapons. Hence the risks of serious injury and death are much higher.
Siege: Siege is very similar to Capture the Flag. One team defends a fortress while another team attempts to breach the fort and seize the banners of the opposing team. The defending team is given the fort along with an arsenal of weapons, including water cannons, scorpion ballistae, and iron portcullis, while the attacking team gets Hannibal the war elephant.
Gladiator Fighting: @Frank Zhang mentions Gladiator Fighting along with Chariot Racing as one of the Roman War games. It is most likely fighting in gladiator style. It's unknown if this version is as non-lethal as the historical one, or if the legion allows for serious injury or death.
Chariot Racing: Frank mentions Chariot Racing along with Gladiator Fighting as one of the Roman War games. It is most likely a race with chariots.