There are three points that could give this game a good rating, there they are: 1) Limited time for an answer. Which is novel for such games, 2) Plot. Which is very simple actually, but it could buy your attention. 3) Nothing to compare in 2012. Good quests are so rare to see nowadays and the Telltale is only company that supports this genre. Summing it up, The game of the year ? NO! The game that you should play at least once? Maybe, if you are hungry for quests.
Quite a game should i say. Interesting, astonishing, with a splendid humor (even black humour sometimes), a great addition to those games created by Shafer and Gilbert. Lot of puzzles. Haven't seen such a game for a very long time. Oh, yeah, and there is also a bit of moral for every story you will hear from The Cave.