Serious Sam is a first-person shooter video game series created by Croteam. The franchise debuted in 2001 with the release of "Serious Sam: The First Encounter." Players control the protagonist, Sam "Serious" Stone, as he battles hordes of enemies across various levels, using a wide array of weapons. The gameplay is known for its fast-paced action and large-scale battles, often featuring numerous enemies on screen at once. The series combines humor with intense combat, and its distinctive art style and design have made it a popular choice among fans of the genre.