Commandos is a stealth-oriented real-time tactics video game series. The five games released between 1998 and 2006 are all set during World War II and follow the adventures of a fictional Allied commando unit. Each mission is loosely based on historical events during World War II to carry the plot. The series was developed by the Spanish developer Pyro Studios and published by Eidos Interactive. The series has sold a total of 3.3 million copies and generated $41 million of revenue at retail.