Arx Fatalis is a first-person role-playing video game released for Xbox in 2003. It is set in an underground world where the sun has failed, forcing inhabitants to take refuge in caverns. The game combines a unique magic system, complex dungeons, and a rich narrative. Players explore the subterranean setting, encountering various factions and creatures, while engaging in quests and developing their character's skills and abilities. Arx Fatalis is noted for its atmosphere and immersive gameplay, drawing inspiration from classic RPGs.