For example, Ubisoft's Rainbow Six Siege has used annual season passes that give players that purchase them access to new playable characters ("operators"), maps, weapons, and game modes.
[4][5] Later the same month, Warner Bros. Interactive Entertainment continued the trend with Mortal Kombat,[6] Electronic Arts released their EA Sports Season Ticket in August 2011.
[8] It is also impossible to know if they are worth buying since they cannot be reviewed until they are released, and the discounts they offer are sometimes offset by poor-quality content that the player would otherwise not have bought.
[8] Additionally, if a game performs poorly in the market, the prices of the DLC for it can fall faster than any discount people would have received by immediately buying its season pass.
[11] Shacknews criticized a number of games for having disappointing season passes, such as Evolve and Aliens: Colonial Marines.