Welcome, Amanda!

It sounds like you're having some amazing dream experiences, and maybe they could become even more fun if you learn to become lucid.

I wish I could have dreams like the ones you describe! One of my lucid goals is to recreate the environment or meet characters from my favorite video games, but I have yet to be successful. It sounds like you've got a natural talent for this. Even if you've been doing it unintentionally so far, the familiarity of these kinds of dream experiences should make them easy to recreate if you decide to attempt this lucidly.

As for what your dreams might mean, since you state that these experiences are based on video games you've actually played, then it sounds like they could be classified as "day residue," where dream content is inspired by some of the observations and events from waking life. There's not necessarily any deeper or symbolic meaning at stake, although it is likely that the plotlines, characters, and events from the games that you are dreaming about have some kind of emotional resonance specifically for you. That is a form of meaning too, but one that only you are in a position to interpret!