Your sentence has an adjective without a subject to modify. This mistake can easily be fixed with the addition of "I am". Don't get too excited, it's just a precaution. Storage requirements are often inflated to compensate for additional space required for patches and future content. God forbid the requirements say, for example, 15GB and the game actually requires 16GB thus potentially making users with only 15GB of free space unable to play despite meeting the requirements.