Originally from Poland, now living in Canada.

Yarpen was interviewed for Bad News 4 (april 1996), in which he revealed he joined Exmortis in march of 1995 as a swapper, but later started to learn coding. He left Exmortis in september, and after a short while as independent, he joined Substance in december.

Swapper adverts in Bad News 4 (april 1996) and Wrotki 5 (june 1996).
Swapper advert in Contrast #3 (December 1995).
Advert in the "Contacts Wanted" (contax.nfo) swapping list.
Swapping advert in Hoax #6 (August 1995).

Yarpen worked on the games World War II: Pacific Heroes (2004), Space Interceptor (2004), PaperBoy / Rampage (2005), The Witcher (2007), The Witcher 2: Assassins of Kings (2011), Syndicate (2012) and The Darkness II (2012).