If you have ever played an "obby" on Roblox, you already know the idea. An obby is an obstacle course: a path of platforms, gaps, moving blocks and traps that you have to cross by running and jumping. Fall off and you go back to the last checkpoint. Reach the end and you have beaten it. Rainbow Obby brings that idea to your browser, full of bright rainbow colours and with far more variety than most.
It is made by emolingo games, and it does something smart: instead of one long course, it gives you many different modes, each with its own twist on parkour.

Rainbow Obby opens on a "Choose game mode!" screen with a long row of cards to scroll through. New modes are added over time, so the list keeps growing.
The original Rainbow Obby. Run, jump and climb through hundreds of obstacles across several worlds. This is where you learn how far you can jump and how the checkpoints work.
Instead of a long path forward, these modes go up. Climb a tall tower one tricky platform at a time. One slip can cost you several floors, so every jump counts.
A course built to fool you, with fake floors, sneaky traps and surprises exactly where you don't expect them. Expect to laugh and groan in equal measure.
The calmer ASMR mode is there for a more relaxed run. Keep scrolling and you will find more modes on wheels and with other twists on parkour. With so many to choose from, there is always something new to try when one gets too hard.

Stuck on a hard part? Rainbow Obby gives you help in the form of jetpacks, springs and other useful items. A jetpack can lift you over a section that keeps beating you, and a spring can send you up to platforms you can't normally reach. Use them wisely and they turn a frustrating section into a fun one.
For more 3D parkour, try Only Up!, the famous endless climb, or Stumble Guys for obstacle-course races against others. If you like the rainbow style, Survivor in Rainbow Monster is a scarier take. Now jump in and head for the top.