Simply put, the Rocket Pass allows you to earn credits from playing. There are four tiers of the Rocket Pass. You can purchase the Rocket Pass Premium at any moment, and the rewards for every previous tier-up will be added to your account automatically. With Rocket Pass, you can get premium rewards that can’t be traded but can be carried on to the next game season. You can also receive special edition items of your choice for every tier-up. Once the game season is over, you have to buy a new pass.