Marcel Vos is a Dutch RollerCoaster Tycoon analyst and YouTuber.

In July 2018, Vos released a video demonstrating a calculator created using roller coasters within RollerCoaster Tycoon 2.

[5] In July 2019, he released a video demonstrating a ride that would take 45 real-life years to complete.

[7] In July 2020, Vos demonstrated a maze that exploits the path-finding algorithm in RollerCoaster Tycoon 2 and is nearly impossible for in-game guests to complete.

After Vos released his video on YouTube, the developers of OpenRCT2 changed the algorithm.