I highly recommend the Modular Dungeon Tiles by LoreSmyth, however this particular set (Mystium) is a bit too redundant to the Genesis Core Set. I have since realized that this was intended as a "Core Set" as seen on the image of the product (but nowhere else) and it makes sense, from that perspective, to provide a lot of the core components.

That said, many of the tiles are identical or contain very minor alterations from the Genesis Set.

My recommendation to the consumer is to get the Genesis Foundation and Genesis Foundation 2 sets and skip Mystium entirely. And my recommendation to LoreSmyth is to update the description of Mystium with some explanation that this is an alternative to Genesis, in some respect.