Clearly these parts had some time put in to make generic parts stack in a neat way.
They make me think of the LEGO (tm) Architecture series: Nice imaginative constructions using mostly basic parts in a good colour scheme. I was also amazed to find that all the parts fitted onto real LEGO (tm) parts without causing any direct damage or stress.
In this post I evaluate my personal experience with the kits of the three with a decent collection of boxes and relatively easy to find: In this review it is important to know that I have not bought any boxes of original LEGO (tm) past 2007 for myself to build, except the occasional board game.
Also on the figurines the joints feel good, the hands snap in, allowing easy rotation without constantly falling out.