What the heck constitutes a custom chess set? There are several factors and these are just a small sample of all the unique sets out in the world.
4 Player chess set - 4 sets of plastic chess pieces – Featuring a specialty 4-fold chess board.
Strato Chess 3-D chess game - Plastic chess pieces - 3 acrylic boards with aluminum S frame and yes there is some assembly required!
Four Fronts 2-3-4 player specialty chess set and you thought playing regular chess was challenging!
Whatever the human mind can imagine coupled with chess pieces and squares could be considered a custom design.
Go ahead and deviate from the norm, if nothing else these sets are a good conversation piece and a great addition to any game room!