For most players, a successful day in RollerCoaster Tycoon 2 involves balancing a budget, keeping guests happy, and ensuring the coasters don’t launch their passengers into the stratosphere. But for Marcel Vos, a self-described “friendly neighbourhood RollerCoaster Tycoon nerd,” the game is less of a theme park simulator and more of a canvas for extreme mathematical optimization.
Vos has spent an exhaustive amount of time constructing what is believed to be the longest rollercoaster ever built in RollerCoaster Tycoon 2. The project, titled “The Googol Coaster,” is so vast and complex that its layout resembles a computer motherboard more than a carnival attraction. The ride’s duration is so immense that it defies standard numerical description, eventually surpassing a googol—the number 1 followed by 100 zeros—in theoretical years to complete.
The creation was not a matter of simple track-laying, but a rigorous exercise in logic and game mechanics. Vos adheres to a strict rule: the setup must work in the vanilla version of the game, meaning no mods or external cheats were used to bypass the software’s native constraints. The result is a masterpiece of virtual engineering that pushed Vos to the point of insomnia, with the creator recalling nights spent awake until 3 a.m. Attempting to solve logic puzzles in his head.
Engineering the ‘Super Module’
To achieve a ride time that transcends human comprehension, Vos utilized a system of “super modules.” In software terms, these act as multipliers. Rather than simply making a track longer, each module is designed to multiply the final ride time by a specific, enormous factor.
Vos filled the maximum allowed park size with 100 of these synchronized super modules. Each individual module increases the ride time by a factor of 174. When these are chained together, the resulting time expansion is exponential. This dense, repetitive geometry is what gives the park its distinct, circuit-board appearance, leading Vos’ friends to compare the layout to a computer chip.
Vos describes this as “by far the most complicated setup I have ever built in any video game ever,” treating the park layout as a series of logic gates that must be perfectly timed to maintain the ride’s progression.
Hacking Guest AI via Toffee Apples
The most intricate part of the build isn’t the track itself, but the manipulation of the game’s guest artificial intelligence. In RollerCoaster Tycoon 2, guests are governed by specific stats: happiness, energy, nausea, and ride tolerance. To ensure the ride functions, Vos had to strip the guests of their agency, forcing them to follow precise paths down to the second.
By strategically manipulating nausea levels and ride tolerance, Vos can effectively “steer” a guest. If a guest’s stats are tuned correctly, they will be forced to choose one ride over another, ensuring they enter the super modules in the exact sequence required. However, this creates a secondary problem: the guests must stay in the park and remain conscious.
To prevent guests from leaving due to exhaustion or hunger, Vos implemented a system of forced recovery. He placed toffee apple stalls immediately adjacent to benches. Because the game’s AI dictates that guests will almost always sit down to eat or drink if a bench is nearby, Vos can force guests to recover their energy and feed themselves without deviating from the intended path.
The Mathematics of Cosmic Time
When calculating the actual ride time in real-world years, the numbers quickly move beyond the realm of traditional mathematics. A googol—a 1 followed by 100 zeros—is a number so large that it exceeds the number of atoms in the observable universe. Yet, the Googol Coaster’s theoretical ride time exceeds even this.
In his detailed breakdown, Vos explores the scale of the ride by comparing it to the lifespan of the universe. He posits the time required to ride the coaster in terms of extracting a single atom from the universe every year and rebuilding the entire cosmos from scratch. It is a thought experiment in extreme scale, transforming a nostalgic 2002 simulation into a meditation on infinity.
Despite the precision of the build, the ride ends in the only way a project of this magnitude could: the carriage eventually flies off the track and explodes, providing a definitive, if violent, conclusion to a journey that would otherwise last forever.
The project has since sparked a conversation among the gaming community regarding the “dehumanizing” nature of the design. Viewers noted that the guests are kept in a state of “necessary happiness” just to ensure they continue their journey, stripped of all agency until the moment of their demise.
For those interested in the full technical breakdown, Vos has documented the entire process in a 41-minute video titled “The Googol Coaster – Longest Ride in RollerCoaster Tycoon.”
As the community continues to push the boundaries of legacy software, the Googol Coaster stands as a testament to the intersection of gaming and high-level mathematics. Whereas there are no official plans to integrate such a build into a commercial release, the project remains a benchmark for the RollerCoaster Tycoon modding and creation community.
Do you have a favorite “impossible” build from a classic game? Share your thoughts in the comments below.
