How Long Does LEGO® ETX Alien Infiltrator (7646) Take to Build?

A typical builder finishes LEGO® ETX Alien Infiltrator (set 7646, 333 pieces) in about 55 minutes. Taking it slowly runs closer to 1 hour 15 minutes; building at a fast pace, about 40 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.