Yes, of course. A secret passage is not a very good example. However, with the through property the RPG Maker provides I realized a tipping waggon which the hero can ride. Without the waggon it is not possible to get past a deep fissure. However, with the tipping waggon the hero can just jump over it. It cost me approx a day to implement it with different speeds and sound effects. But it was worth it. With a through property ideas like this could be realized also with RPG Playground.