SmølfQuest

From the introduction:

SmølfQuest er et rollespil som foregår i smølfernes verden. Man spiller en smølf, som lever i den verden, der er beskrevet (illusteret) i de danske smølfetegneserier ... SmølfQuest er et helt almindeligt rollespil, og man bruger Basic RolePlaying systemet.

Translated from the introduction:

SmølfQuest (Eng.: SmurfQuest) is a roleplaying game set in the world of the smurfs. You play a smurf living in the world described (illustrated) in the smurf comics ... SmølfQuest is an ordinary roleplaying game which uses the Basic RolePlaying system.

This RPG seems to only have appeared in Saga (Issue 17 - Dec 1992).
The RPG has never been published commercially, but has been used at several conventions (mostly Viking-Con, Fastaval and Chop Con).