Great Coasters International

A modern specialist in wooden coasters

Great Coasters International, often shortened to GCI or GCII, is an American roller coaster manufacturer founded in 1994 with offices in Pennsylvania. The company is best known for wooden roller coasters, a ride type that gives a very different feeling from steel coasters because of its structure, sound, rhythm and physical texture.

Fast, flowing and lively layouts

GCI coasters are often associated with quick transitions, curved drops, low-to-the-ground speed, banked turns and a sense of constant motion. Their trains, including the well-known Millennium Flyer style, helped give many modern wooden coasters a smoother and more agile feel while keeping the lively personality visitors expect from wood.

Why visitors notice the difference

For guests, a GCI coaster usually means a ride that feels warm, natural and energetic rather than purely vertical or inversion-focused. The attraction can be family-friendly or quite intense depending on the layout, but it often leaves a strong memory because the train seems to weave through its structure with speed, sound and rhythm.