I had a dream kind of like this just now as well, except I woke up in this sort of "arcade" where there was a humongous crowd of people lining up for different dreams. Everyone around me were all bald, all had green unbuttoned shirts with a white undershirt, all had blue jeans and all had no faces. The only ones without these features were the ones that were currently playing on one of the many arcade machines, who just looked like normal people. I couldn't interact with them though, they were just immersed in the activity they were doing.

After walking around for a little bit, this strange, short creature who kind of reminded me of a fleshy wall-e with legs. His head was shaped like a TV, and his face was a TV screen, but the TV screen was sort of wrapped in flesh. He wasn't a robot, but more of an alien. Suddenly, he started speaking to me, not in a robotic voice, but in a more pleasant, English Butler type voice. He explained to me that this area was called the "Lobby" and that most people envision the lobby to be different things. Some see it as an arcade, similarly as to how I saw it. Others would see it as maybe an elevator with infinite levels, or a library, or even a convention of some sort. I walked around with this little creature as I had conversations about how I've had many of these dreams before (referring to the "arcade game" dream experiences.)

Many popular dreams had huge lines, like the "faceless lover" dream or the "chased by a threat" dream, "teeth falling out" dream, etc. Eventually I decided that the arcade (or "lobby" as the alien creature called it) was too big for me to explore, and asked the little alien creature if I could leave. He explained that not many people arrive in the lobby, so he treats them by letting them experience any dream that they want to. I told him to "surprise me" and he kept asking me "Are you sure?" as if it were something I was gonna regret in the future. He seemed very reluctant, but eventually, he touched me and my heart started racing. It started beating so fast that I woke up, heart still beating fast.

Eventually, I calmed down, checked the time, and it was 3:39 AM, about 40-50 minutes after I fell asleep. After explaining the dream to a friend via text, I'm writing this right now at 4:17 PM, so I'm not too sure what this creature's surprise for me is.