Gaming Short Hand
Over the years movies have accrued countless visual cues as a short hand to convey meaning to the audience. Black means bad, white means goods, someone who wares glasses is smart, while someone in a cape has power. These can be cliches or tropes, but the point is simple things have deep meaning to the audience, so it doesn't have to be said.
While games are not as old as film, games have gathered a few short hands cues of their own. Anyone who sees a Red Barrel knows, it will explode. It's been that way for a long time now, probably since Doom, and it is so ingrained in us that its hard to do anything else. People Can Fly tried.
Safe's must be hacked, garbage cans can be plundered, and a lot of supplies just lying around means trouble. Can you think of any other video game short hand? What tools do all developers have at their disposal that will always mean the same thing to us?