Supplex was a German-based Amiga cracking group, formed in july (according to an interview with Logo 7 in Fourth Dimension 3) or august/september (according to an interview with Mark in Cracker Journal 18 of 1989. Free Agent was the main organizer.
In a january 1990 interview with Cracker Journal 18, Mark revealed the member roster currently was 19 - with 15 Germans, 3 Italians and 1 Dane. Cracker Journal 19 (march 1990) reported that the group had a new USA BBS at 704-254-9142 - which has been named Power Surge in other sources.
The group co-arranged the Maximum Pleasure Party 1991 in Luxembourg, in may 1991. The june release A New Smash welcomed Stresskiller, Geert, Sid and MDB as new members. The december release The Brainies +4 welcomed Frap as a new member, and the trainers for The Adventures of Moktar and Darkspyre listed Armin, Biscrok, Defcon 5, Frap, Free Agent, Heino S., Logo 7, Mark, Marvin, Syce and WOTW as active members.
The june 1992 trainermenu for CJ In The USA announced Cellat as a new member. Chit Chat 5 (july 1992) reported, "After 3 years WOTW left SUPPLEX and joined GOTHIC"
In early august, the group coarranged the demoparty 680xx Convention 1993 in Hamburg, Germany.