Hi Madara,
Thanks again for playing our other games! Be sure to try out The Button and No Place Like Home too ( more links can be found at the bottom of game description)!
We consider ALT CTRL DEL a game with multiple protagonists, which basically means you get to make choices for all the main characters at the appropriate times. In this case it'll be for the 4 main family members - father, mother, son, daughter. In this way, it shows what each character thinks of the new universes/worlds and how each of them interacts with their new surroundings.
Hope that helps! Stay safe and cheers!