while this is a demo version of the game, at the moment there are no conditions for "Bad Ending" or "Game Over". In general, do what you like in the game, and to view existing scenes, fulfill the conditions for launching them, for more details, see the
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.
With the latest update to version 0.79D, some scenes were "broken" by an attempt to expand the content, that is, there are no sounds and pictures that are now in the scene scripts, but they are not yet in the game files. They promised to fix it in version 0.79F
About the scene in the living room. You need to click on your sister at about 21:00 and there will be a chance that she and her brother will go watch TV. I don't know any additional conditions yet, I'll have to look for triggers in the scripts.