The Gladiators' Open was a open-ended gladiatorial challenge that was held on The Wheel.
A combatant was matched up with an opponent that was theoretically equal in ability, but it was not uncommon for a round to have participants of widely different skill levels. The Open had up to a dozen gladiators who were forced to fight until only one remained. The combat arenas varied, including urban areas, jungle environments, and the Zero-Gee Hall. Weapons ranged from vibro-axes to beam pistols.