Dreams involving gaming, such as playing Fortnite, often reflect your current interests or hobbies. In your dream, playing with your cousin suggests a connection or bond with family, and it could indicate a desire for social interaction or a shared experience.

The fact that you had your eyes closed but could still hear him might symbolize a sense of trust or reliance on your cousin, even when you feel vulnerable or disconnected. It may also reflect a situation in your waking life where you feel you're not fully aware or engaged but are still participating in some way.

Feeling your covers over your head as you woke up could represent a sense of comfort or security as you transition from the dream world back to reality. It might indicate a need for protection or a desire to retreat from the outside world.

Overall, this dream could be highlighting the importance of your relationships and how they provide comfort, even when you might feel uncertain or lost. Consider how you can nurture these connections in your waking life.