This game was part of a bundle I received and we played it when our GM couldn't make it to the regular session the other day.
As a group (3 players at the time) we tend to be more on the silly side with our regular games as well and Space Train Space Heist turned that up another notch. We're also experienced Microscope (Ben Robbins, Lame Mage) - players, meaning we were already comfortable with extremely rules-light improv games. If that doesn't sound like something you enjoy, you might want to stay away from this game - the rules are bare minimum, which isn't a bad thing if you can handle it but it's not for everybody - everyone else should absolutely go check it out!