@Gibbx is right, subscription means in gaming industry a payment you need to pay (usually monthly) so you can have access to the game. Without this you can not simply play.
Many games offers optional subscription, which are not needed to play the game, but gives players who are doing so certain benefits. These payments are usually called VIP, premium, PLUS -packages or something like that so people would understand the difference between an optional payment and a must pay subscription.
Someone who disagrees with me, please show me a single game, which is marketing as subscription game, but means optional subscription and I will take my words back.
