Question:What if some parts are broken or lost?
Answer:We offer part replacement service. Please click here to learn more about how to apply for it
Question:What should I do if I encounter assembly issues?
Answer: If you encounter assembly issues, we have dedicated customer service to assist you. Email: service@rokronline.com
Question:Is the lift included?
Answer:Yes, each package contains 1 city module and 1 marble lift.
Question:How is it powered?
Answer:This product is powered via a USB Type-C connection. A Type-C power cable is not included; you will need to provide one yourself.
Question:How many ways are there to expand?
Answer:There are round entrances on both sides of the marble run so that marblescan enter from the side lift module in the horizontal extension and verticalstacking.
1.Horizontal Extension - Put a lift module in the middle and secure it withconnectors. While running, the lift module will carry marbles to the top andmake them enter into marble runs on both sides.
2.Vertical Stacking -Secure two lift modules on one side. While running, thelift module will carry marbles to the top. Then marbles enter the upper marblerun, roll through the lower marble run and finally return back to the lift module.
3.Four Grid Stacking -Connect two lift modules vertically and assemblemarble runs on both sides of lift modules. While running, the lift modules willcarry marbles to the top. Then marbles enter the upper two marble runs, rollthrough the lower marble runs and return back to the lift module.















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