How Long Does LEGO® Sonic the Hedgehog – Green Hill Zone (21331) Take to Build?

A typical builder finishes LEGO® Sonic the Hedgehog – Green Hill Zone (set 21331, 1,125 pieces) in about 2 hours 45 minutes. Taking it slowly runs closer to 3 hours 40 minutes; building at a fast pace, about 2 hours 5 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.