LEGO Hidden Side Sets
32 items
Browse the LEGO Hidden Side theme, with 32 sets in the catalog. Compare live offers from independent sellers to find Hidden Side sets at the best price, see what each set includes, and complete your collection.
How much are LEGO Hidden Side sets worth? See the Hidden Side value guide →
Looking for a character? Browse all LEGO Hidden Side minifigures →
Sign in to see which of the 32 Hidden Side sets you already own, and which you still need to complete the theme.
Frequently asked questions
How many LEGO Hidden Side sets are there?
CollectORbuild's catalog lists 32 LEGO Hidden Side sets, from current releases to retired and rare sets. Use the year and availability filters above to narrow by era or surface the ones that are retiring soon.
Where can I buy LEGO Hidden Side sets?
Open any Hidden Side set to compare live offers from independent sellers, each showing price, condition, and any seller notes. You can buy from several sellers in one cart, and the multi-store build optimizer finds the cheapest way to complete a set across stores.
How do I tell what a LEGO Hidden Side set is worth?
CollectORbuild tracks average new and used secondary-market values on the sets it prices, alongside the original RRP, so you can see what a Hidden Side set trades for today and how far it has moved from retail. Sort by price to put the most valuable Hidden Side sets first.