"My son (3) was thrilled when he saw the box because of the helicopter. While he's younger than the age listed on the box, I have fun building the sets and he has fun playing with them. He spent the hour build time playing with the mini-figures while I built the helicopter itself.
The instructions are easy to follow, the build is quick, and the final assembled piece looks really good. I have only one (very minor) complaint, and that is that the second figure (female) should have a helmet as well for when they're in "flight mode.""