The Rusty's Good Samaritan test, and the Rusty's Functional Pockets Test.
The functional pocket test means that if you give something to an NPC, and the NPC does not dispose of it in some form, you must be able to take it back."Rusty's Good Samaritan Test" = The game acknowledges that you helped a character without any prior request to do so, and it must not be in the form of a dialogue option. I first came up with it during Shadows of Undrentide for NWN, there's some NPCs I saw that were injured and I healed them, and the game acknowledged it, and rewarded me for it. There was nothing that prompted me to do so, or anything to suggest you'd get something in return for it. The game just expected you to pay attention to what's happening, and involve yourself in the game world.
If a game passes both of these tests, it's almost guaranteed to be a timeless classic.










