Cifer84: Does someone know this very old game?:
Probably MS-DOS, Windows 95 or older: A little man in a house. 2D (maybe even just in black-white). You could do different things in this house, like ringing at the house door or ringing the telephone, and then the man responds to your actions, like open the door. You could not control the man himself, just do things in the house and he does something in response.
This thread is for a forum game, where you have to guess the game from a picture that gets posted, whoever guesses correctly then gets to post the next picture & so on & so forth.
The game you may be thinking of is Little Computer People though.