Hi I'm searching for an rpg i was playing as a kid in the early 90's my problem is I don't remember it's name. The hint I can give you is a description of the intro video: A boy sits in front of his pc, suddenly a dimension gate opens and a knight appears trying to kill the boy. He manages to kill the knight and is drawn through the gate into a medieval world. I thought the game belonged to the Ultima series but couldn't verify it. Anybody who can help me?

That sounds like Nox

http://www.gog.com/en/gamecard/nox

And the intro :

http://www.youtube.com/watch?v=LbVm86e_aic

Ultima 6 intro :

http://www.youtube.com/watch?v=eiGiiL3BOwI&feature=related

Ultima 7 intro :

http://www.youtube.com/watch?v=JfqOZlNxbfI

Ultima 8 intro :

http://www.youtube.com/watch?v=klGN8HWbUmk

Ultima 9 intro :

http://www.youtube.com/watch?v=sDS1W_-_OEI

The Ultima intros usually involved someone at a PC or watching TV then a portal appearing.

Thank you for your fast reply. The intro is quite similar but this isn't the game I'm looking for. If I remember correctly there is just the boy and the knight fighting in the kids room during the intro. Great. This is it. Thank you very much ;)

Remember to mark your question as answered, then. ;-)