Not very good.
The plot is pretty bad, no twists or turns or anything of the sort.
The puzzles (or should i say puzzle?) were pretty simple, nothing too challenging.
Its very glitchy. If you quit the game and come back to it, you cant interact with anything.
And the fact that you cant reset the codes on the code machine, is horrible. If you make a mistake with the code, you have to restart the game all over again.