What does Bart say? | Theme Parks • Fairs • Attractions

In April 2025, Walibi Holland officially opened its highly anticipated new addition: YoY, a groundbreaking single-rail coaster designed by the legendary roller coaster manufacturer Rocky Mountain Construction (RMC). Before the gates swung open for the general public and mainstream press, Walibi Holland hosted an exclusive, private afternoon event for just two hundred dedicated roller coaster enthusiasts. The event was packed with insider experiences, featuring a personal Q&A session with park director Mascha Taminiau, a limited-edition commemorative pin, themed catering, and—most importantly—exclusive ride time on YoY.

I was fortunate enough to secure one of those coveted two hundred spots, offering a fascinating first look at how this unique coaster alters Walibi’s skyline. This review takes you straight inside that intimate preview event, providing an honest, deep-dive analysis of YoY’s ride experience, pacing, and overall impact on the park’s thrill portfolio.

With the opening of YoY, Walibi Holland secured a major European first by introducing the continent’s very first RMC single-rail coaster. True to their thrill-capital reputation, the park pulled out all the stops by adding not one, but two separate tracks to their lineup: a family-friendly layout (Chill, in blue) and a high-intensity option for true thrill seekers (Thrill, in green), boasting no less than six inversions. This impressive element count immediately crowns YoY as the single-rail coaster with the most inversions worldwide.

Before we were cleared to storm the queue, park director Mascha Taminiau took the floor for a brief speech and an exclusive Q&A session. When asked about future plans, she hinted that Walibi still has plenty of room to expand within its current boundaries, suggesting that the area surrounding YoY might eventually be transformed into a new scare zone. While she kept her lips tightly sealed beyond that teaser, it definitely gives us something exciting to look out for during the upcoming Halloween Fright Nights.

Let’s dive into the Chill side first:
I chose to kick off the afternoon on the Chill side, partly due to its proximity to the entrance, but mostly because I was strategically saving the high-thrill track for a milestone: my 222nd roller coaster credit. To reach the Chill side, you pass directly underneath the station building. The queue line is nicely themed, immersing you in a refreshing underwater atmosphere. On a warm day like today, waiting here was absolutely no punishment—a stark contrast to the other side, which I’ll get to in a moment. We joined the queue just as it moved indoors, putting our estimated wait time at a reasonable 15 to 20 minutes. It’s common knowledge in the industry that single-rail coasters aren’t exactly capacity monsters, but the ride operators maintained a fantastic, high-energy pace that kept the line moving steadily.

Out on the track, the Chill side proves to be an absolute airtime machine, and the dueling interaction with the Thrill side is brilliantly executed. It all starts on the lift hill, where both trains are hoisted up simultaneously before diving into the course together. I managed to snag three rides in different rows—front, middle, and back—and the back row easily took the crown for me. While the front car can feel a bit sluggish through certain elements, sitting in the back means you get violently yanked over the drops, offering a surprisingly aggressive amount of airtime for a family-oriented layout.

From Chill to Thrill, the Thrill side:
After experiencing the Chill side, it was finally time for the main event: the Thrill side, which officially marked my 222nd coaster credit. I was fortunate enough to test-ride this high-intensity layout from several different rows throughout the train. Interestingly, unlike its sibling, no single seat really stands out as the absolute definitive sweet spot just yet. That said, the layout itself is undeniably strong, and the execution of the inversions is absolutely top-notch. The absolute highlight for me is a phenomenal moment of prolonged hangtime; for a few thrilling seconds, you are completely suspended upside down, staring at the structure below. It’s an incredible sensation that immediately sticks with you.

However, looking at the layout critically, it does spark an interesting debate. While previous RMC single-rail coasters worldwide typically featured three inversions, Walibi’s Thrill side doubles that count to six. Does a coaster of this model actually need six inversions? In my honest opinion: no. The final inversion, in particular, feels somewhat forced and unnecessary. It leaves you with the distinct impression that it was added at the very last minute just to hit a record-breaking, even number for marketing purposes, which unfortunately disrupts the natural pacing of the finale.

Take a break in between rides at Flavors:
Beyond the tracks themselves, Walibi Holland also refreshed the surrounding area with a brand-new catering outlet named Flavors. This modern spot offers a great variety of sweets, artisanal snacks, and both hot and cold refreshments. What makes Flavors a fantastic addition to the area is its layout; it features a comfortable, covered indoor seating area alongside a massive outdoor terrace.

The positioning here is brilliant, as the terrace directly overlooks the launch track of Xpress: Platform 13. It creates a dynamic atmosphere, and I can already see myself sitting here on a warm summer day, enjoying a cold drink while watching the trains of both coasters fly by.

However, looking at the layout critically, it does spark an interesting debate. While previous RMC single-rail coasters worldwide typically featured three inversions, Walibi’s Thrill side doubles that count to six. Does a coaster of this model actually need six inversions? In my honest opinion: no. The final inversion, in particular, feels somewhat forced and unnecessary. It leaves you with the distinct impression that it was added at the very last minute just to hit a record-breaking, even number for marketing purposes, which unfortunately disrupts the natural pacing of the finale.

If you are planning a trip to Walibi Holland to experience YoY for yourself, I highly recommend reserving a virtual time slot in advance. Keep in mind that because YoY is inherently a low-capacity attraction, you will need to book separate time slots for each side—so make sure to schedule plenty of breathing room between the two. These time slots are your best guarantee to secure a ride on both tracks and can be easily booked via the official Walibi Holland website. If time slots happen to be unavailable on the day of your visit, you can still join the regular standby queue. Alternatively, if you don’t mind splitting up from your group for a quicker wait, utilizing the single riders line is a fantastic strategy to bypass the main crowd.

Are you ready to ride the other side? 

Is Walibi Holland Worth Visiting for YoY?
Yes, absolutely! RMC roller coasters are still a rare luxury in Europe. For years, enthusiasts on the continent only had a few legendary RMC coasters to choose from: Wildfire (2016) at Kolmården, Zadra (2019) at Energylandia, and Walibi Holland’s own Untamed (2019). By introducing Europe’s very first single-rail model—and doubling down on a dual-track layout—Walibi Holland cements its status as a premier destination for roller coaster enthusiasts. With the addition of YoY, the park offers a well-balanced lineup that caters seamlessly to both families and hardcore thrill seekers. And for the credit hunters out there? It’s a spectacular, high-quality “+2” for the count that you absolutely cannot miss.