Quake III Arena for the Sega Dreamcast is a fast-paced multiplayer-focused first-person shooter where players engage in intense combat within futuristic arenas. The game emphasizes skill-based competition, offering a variety of weapons and power-ups across intricately designed levels. With smooth graphics and responsive controls, players face off against both AI-controlled bots and human opponents in various game modes, including Deathmatch and Capture the Flag. Quake III Arena's genre can be succinctly defined as an arena-based FPS, known for its competitive edge and adrenaline-fueled action.