One Call of Duty: Warzone player finds out how helpful and powerful cluster mines can be when used in a small room against a squad of enemies. Besides being free to play, a big reason why Call of Duty: Warzone continues to be a popular Battle Royale experience is the freedom it allows players to experiment with various loadouts and equipment. Naturally, each Call of Duty season typically features a handful of standout weapons and gear that players gravitate towards, but there are more than enough options for those who may want to try something a bit more unconventional.