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Working Ko-Ko System (WKS) Name: Working Ko-Ko System Handle: WKS Type: Group Active: no Country: Hungary Members: Ko-Ko (Member) Notes: WKS (usually spelled W.K.S) was Ko-Ko's group handle, including only him. Releases by Working Ko-Ko System Title Category Release Date Lang​uage Size Distri​bution Best Demo Demo 1989 Hungarian/English 64K Freeware Extra Airwolf (WKS) Game/ArcadeAdventure 1988 English 64K Freeware Fantastic Demo Demo 1989-05-01 English 16K Freeware Mona4 Demo/512Byte 2021-11-15 (none) 16K Freeware 4 release(s). Copyright © Plus/4 World Team, 2001-2025. Support Plus/4 World on Patreon