My sister got a mega blocks set in the mid-late 80s and while they fit with each other well enough, their compatibility with LEGO was abhorrent. As time went on her collection was rolled into mine, and I spent the next decade purging mega blocks from my LEGO, and on occasion I still find one.
In 2005 or so there was a very cool ork castle from an off brand we decided to get for my oldest daughter. It looked amazing, but had the structural integrity of rotted Lincoln logs. There were a lot of misshapen pieces and even the perfect ones did not quite fit.
My sister got a mega blocks set in the mid-late 80s and while they fit with each other well enough, their compatibility with LEGO was abhorrent. As time went on her collection was rolled into mine, and I spent the next decade purging mega blocks from my LEGO, and on occasion I still find one.
In 2005 or so there was a very cool ork castle from an off brand we decided to get for my oldest daughter. It looked amazing, but had the structural integrity of rotted Lincoln logs. There were a lot of misshapen pieces and even the perfect ones did not quite fit.
I have never tried another knockoff since.