Finally, guests could make a complete circuit around the park. Along with Roaring Rapids, a midway that linked Revolution to Spillikin Corners (Railway area) was finished. In 1981, Six Flags Magic Mountain introduced river rafting rides to the West Coast with the opening of Roaring Rapids. In 1979, the park was sold to Six Flags, who added Six Flags to the beginning of the name in 1980. Today, during the park's Halloween celebration, dubbed Fright Frest, Colossus operates backwards using trains that formerly operated on Psyclone, a former wooden coaster. Occasionally, one of the Colossus trains ran backwards in the 80's. In 1991, a camel hump on the ride was replaced with a block brake. After refurbishment, the ride went by smoother.
After Colossus's first operating season, the ride was closed and extensively redone. Two years after Revolution's opening, Magic Mountain opened Colossus, which was at the time, the fastest, largest duel-track wooden coaster in the world.
A year after Revolution's opening, Universal filmed a movie at Magic Mountain called Rollercoaster, Revolution being the centerpiece of the film. Now, due to the countless amount of flora and fauna that shields the loop, guests cannot take a glimpse at what is ahead. When built, guests could see the loop from earlier parts of the ride. With the opening of that ride, Magic Mountain was the first park to have a coaster with a full-circuit, 360-degree loop. In 1976, Magic Mountain opened their third roller coaster: The Great American Revolution (now known as Revolution). It took riders to an area of the park and back. In 1975, the park's Grand Centennial Railway opened in Back Street. The new rides were Himalaya, Electric Rainbow, and Tumble Drum. In 1974, the park opened a new complex of spinning rides that was later named Back Street. In 1973, Magic Mountain opened their second roller coaster: Mountain Express. Also in 1972, the park opened Jet Stream, the park's second log flume-type ride. The trolls were then removed thirteen years later in 1985. A park contractor provided entertainers that wore the troll costumes until the end of 1972 when the park provided the entertainers. The trolls, named King Blop (aka King Troll), Bleep, Bloop, and the Wizard become notable figures of Magic Mountain. Instead, the park used trolls as park mascot beginning in 1972. However, Magic Mountain did not use the characters for nearly ten years.
When Magic Mountain opened in 1971, the park was permitted to use characters from the Looney Tunes.
Magic Mountain opened with Goldrusher, a steel roller coaster still in operation at the park, Log Jammer, a log flume attraction that closed during Magic Mountain's 40th year of operation (replaced by Full Throttle), the Sky Tower, a 400-foot tall observation tower, El Bumpo, a bumper boats ride, Grand Prix, a car ride similar to Disneyland's Autopia, a Carousel, the Funicular, a cable railway renamed to Orient Express, a Metro with three park-wide stations, a Carousel, and many other kiddie attractions. Since Magic Mountain was in a remote part of Los Angeles, a county bus line provided transportation to and from the park, and optionally offered admission at time of bus ticket purchase. Admission to Magic Mountain was $5 for adults and $3.50 for children 3-12. 500 employees worked at the park and 33 attractions were operating. Six Flags Magic Mountain opened on as Magic Mountain.