Byterapers Grendelparty 1988 was held at a school in Iisalmi, Finland for the C64 and Amiga scenes. Attenders were mostly finnish, the only foreigners in attendence were two Norwegian groups and one American. Attendance was approximately 70-80 people. This was perhaps the first ever party to last a full week. The Cracker Journal report claimed it lasted from the 8th all the way to the 16th, but we choose to trust the information from Byterapers' webpage. Drinking was not officially allowed inside the party place.

Party reports were published in Scandinavian News 2 (july 1988) and Cracker Journal 9 (september 1988).

Results based on results.txt from scene.org (though the file contains an incorrect date in april of that year).