Whenever you introduce a new creature, you should be very specific in your descriptions so that players know if this is something for them to fight or have sex with.
Push the Button!
Scenes from Half-Life 2:Episode 2, showing Gordon Freeman being a jerk.
Trashing the Heap
What does it mean when a program crashes, and why does it happen?
Do It Again, Stupid
One of the highest-rated games of all time has some of the least interesting gameplay.
Two minutes of fun at the expense of a badly-run theme park.
Mass Effect Retrospective
A novel-sized analysis of the Mass Effect series that explains where it all went wrong. Spoiler: It was long before the ending.