A good game works. Simple as that.
Whether you like a game or not, you cannot dispute it when a game's mechanics are just executed according to plan. I can see, say, FIFA works pretty damn good, but you won't catch me playing it.
You can compare a game with a machine. When every cog and chain lock into each other and spin according to plan, you get one big well-oiled machine. The same counts for games; when music and sound, art design and graphics, gameplay and story all latch into each other and operate according to plan it just functions well.
Whether I like a game or not is another matter entirely. I've liked games that didn't really work that well and disliked games that worked really well.