I thin this explanation is helpful:
The thing, which makes you say: "Wow! This has been a really great game!" after paying an (adventure) game, is not the only the sum of all the graphics, story, characters, music, sounds (...), it is a bit more than the sum of this all!
SO, if you make a game, you'll notice sometimes in the development process, that the game now is a bit more than just the sum of all the included things. If you notice this, your game is "good"!
The thing, which makes you say: "Wow! This has been a really great game!" after paying an (adventure) game, is not the only the sum of all the graphics, story, characters, music, sounds (...), it is a bit more than the sum of this all!
SO, if you make a game, you'll notice sometimes in the development process, that the game now is a bit more than just the sum of all the included things. If you notice this, your game is "good"!