Outstanding game. These are my all-time personal favorites.
Great game. These are some of the very best games I've played.
Very good game. These are games I play frequently (or would if I could).
Good game. These games are consistently entertaining and are well done.
Above-average game. These games are usually worth owning, and contain some great qualities, but aren't usually my first choice.
Average game. Can be fun or challenging in the right circumstances, but I wouldn't buy it and have no real urge to play.
Below-average game. Eh, not so good. I'd usually rather try something new than play this again.
Poor game. These games I'd rather not play again.
Very poor game. The prospect of playing this again is almost laughable.
Black Hole of Fun. Overly simplistic, uninspired, or extremely tedious. I'm worse off for having played this the first time.