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Great Coasters International (GCI) Explained – Theme Park Definition

American wooden coaster manufacturer known for fast, twisty layouts.

Coasters

Great Coasters International (GCI) is an American manufacturer specialising in wooden roller coasters. Founded in 1994, GCI is known for their Millennium Flyer trains and layouts featuring rapid direction changes and sustained airtime. Notable installations include Wodan (Europa-Park), Thunderhead (Dollywood), and Troy (Toverland).