When most of your knowledge of orbital mechanics, rotational dynamics etc has come from playing orbiter
GUILTY.
...when you replace your mailbox with a Progress.
Bonus points if you also replace your garbage cans.
Super bonus if it's life-sized.
Ultra bonus if your local council docks their garbage removal truck to it.
Hyper bonus if it has SSTO LEO capabillity.
Probe bonus if you notice that the above (super, ultra, hyper) is related to TransX.