Here are the meanings of the Stats listed on each game page:
Play Time: The amount of time you would realistically play the game. Any higher would be unnatural.
Mac Compatible: Can you play it on your shitty Mac computer?
And the Advanced Stats:
Mouse Forced: Can you see and move your mouse, so you can potentially exit the application in dire situations.
Escape: What does the Escape (Esc) key do. Usually it's either Functionless, conditional, or Exits the Game.
Hide Practicality: How easy it is to hide the Game. This ranges from Terrible at worst, to Low, Moderate, High, and Hidden at best.