The building process was fun, intuitive, and took a hell of a long time (like over a full day just to assemble the Variety Kit). The end product works surprisingly well with the motorbike being super responsive, house blocks having seamless integration, fishing rod moves smoothly & the line has resistance, piano is fairly versatile, and the RC car being coupled with the camera is cool.
I've yet to actually delve into the games but so far it's been pretty fun.