Falls apart very easily and often. Once it's built, which in itself is very time consuming, you cannot touch it again or it will fall apart at the slightest touch or movement. My son who loves building with Legos did not like this at all. He advised me never to buy the brand again.

will not stand when put together, too heavy at head and tail

So, other than the Lego Bird of Paradise (partially pictured here), I haven't built a Lego (or Lego-compatible) set for about three decades, not since I was in highschool and playing with my younger brothers. I like the end result -- Eevee is cute and her tail was very satisfying to build. However, the rest of build was an absolute nightmare. There are tonnes of fiddly little pieces, especially in her legs, and the instruction booklet is not at all clear on probably half or more of the steps. Very often, I was having to look ahead at the next step to see exactly where the bit I had just constructed was supposed to attach. The booklet makes some distinction between pieces (always saying not to use Eevee's mouth brick instead of other bricks, for instance, and differentiating between big and little pieces of _some_ parts, but for many of the sloped bits, there's no clear indication whether the piece being used is three dots long or four. Gotta look ahead to the next step (or next several steps) to see. A few pieces are very, very, very close in appearance in the booklet (the bumper/brackets with the dots going up or the dots going down), and I had to tear apart and redo one section of one of her legs because I used the wrong bracket/bumper, and couldn't connect the pieces that attached to the side of her leg. When building Eevee's chest ruff, the booklet also had a color error, showing to use light tan pieces instead of the ivory/clay. Something like that might have happened earlier in the build as well, because at one point I was left with three 2x4 panels in the ivory instead of the light tan ones I needed. I was able to cannibalize from elsewhere on the build where it didn't show, but that was a headache and a half all on its own. Further, while the bags are numbered, some of the pieces needed for later bags are inserted into earlier bags. This was especially confusing since the set also has about 20 or so extra pieces. As the build was going, it was hard to tell if the pieces were spares (little pieces that might get dropped and hard to find make sense, but some of the spares ended up being large pieces) or if the pieces were accidentally missed due to the confusing instructions. Many times during the build, there were places where two bricks were used where a single other brick could have been given instead (two 2x4 panels instead of a 4x4 panel, a 2x4 + 2x2 instead of a 2x6 panel, etc). That felt like a way to artificially increase the piece count... I also had a lot of difficulty snapping a lot of the pieces together. They seemed real finicky at times, needing to go straight down on the other piece, instead of angling in and on. I don't remember that being a problem with the actual Legos, for the one set I've built recently. My experience with this Mega Construx build makes it very unlikely that I'll buy another of their sets -- not as a gift except for a very patient person (which my friends and our nieces and nephews aren't) and certainly not for myself. Well, maybe if they make a Galarian Rapidash, but even then I'd have to think long and hard about it. The box says "10+", but I've got a feeling that it would end up being more of "parents of the kid help them struggle through the unclear instructions to build this." Again, the finished product is very cute and she'll have a place of prominence with my other dolls and toys on display, but I really can't recommend this build to others.

Fun to put together, but won't stay together. Tail extremely heavy & throws balance off of whole construct.