a friend asked me whre he could buy chaser for his own and i told him on gog, just to find out, that the game isnt available anymore.
what happened to the game ?
why is it gone ?

I think it was an IP of Nordic Games (not sure) and they withdrew their games because of lack of regional pricing things (again not sure).

And it's back for good:

http://www.gog.com/news/weekend_promo_nordic_returns

Enjoy!