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Once you buy Ultimate Vault Hunter Upgrade Pack: The Holodome Onslaught Steam PC on HRKGame, you are going to receive a digital
activation code (aka CD KEY) of Ultimate Vault Hunter Upgrade Pack: The Holodome Onslaught instantly. You can then activate your
Ultimate Vault Hunter Upgrade Pack: The Holodome Onslaught CDKEY on Steam and start downloading it!