Here’s a nice little "fog of war" effect for exploring the rooms (in Conflux, the game I’m working on in SMILE GAME BUILDER).
This is a feature in my game Conflux, where when you enter the room it and all of its contents are revealed and when you leave it’s covered the contents are hidden again. Eventually, all rooms will have this feature.
I’ve been asked how I achieved this, but for now I’m keeping this method a secret and I’m neither confirming nor denying any guesses on how it’s done. Perhaps in time I’ll create a tutorial on it. For now, however, I’m not going to.