There was a VR game or something in my dream which I played in a giant real-world dome... it was actually unclear to me how much was in the game and how much was "real life" as it was a dream anyway... This was supposedly part of the backstory from the Thing in the Fantastic 4, but I heard some other superhero names and it is more like Alien.
The setting is a giant dome inside a spaceship where astronauts have been in hibernation during transport
Unfortunately these reptilian aliens invaded and you can see some of the dead alien and astronaut up in the dome.
Before the game starts, the reptilians have adapted to copy the appearance of people on the ship. You will have people and reptilian replicants awake from hibernation. You are in one position on the edge of the dome and snipe reptilians as they