It seems like it takes 10 in game minutes to game which isn't much for single player RP purposes or if late game you just want to pass the day with gaming or have to kill an hour before dark. I would like to recommend using an item arrow making gaming sessions 30 in game minutes for realism (want to say an hour but 30 minutes seem more manageable for multiplayer, and lets plays are usually 30 mins) or maybe add an option for quick gaming session and long gaming session with something like.

short gaming session - 10 in game mins 50% reduce boredom or no change, 40% low happiness 10% low unhappiness to avoid spamming
long gaming sessions - 30 in game mins 30% reduce boredom or no change, 50% mid happiness 20% mid unhappiness in the spirit of frustration in 90 games.
or maybe hardcore gaming session - 1 hour 20% reduce boredom 60% high happiness 20% high unhappiness to make gaming more of a gamble which would spice it up a bit

audio can easily be looped or extended. It would be interesting if you can make a Game beaten progress bar, like reading the skill books allowing you to replay the game multiple times