Yamataï gets too little of love. It's a game with a beautiful table presence and with interesting mashup of mechanics that are really on the lighter spectrum.
Radlands is currently my favorite two-player card game. It plays smoothly, has a vibrant color palette and although I would appreciate the game mat I enjoy the game on the clean table as well. I like the action queue mechanic in the form of ongoing events, back-and-forth dynamics and energy (water) management.
I was looking at getting Radlands this morning too. It has been on my list for a year or so and keeps coming up as having something special. I really like the Radlands theme also (possible 2000ad inspired).
I've played Architects of the West Kingdom one time also and liked it a lot.
I've never heard of Yamataï either, which is surprising because we love Kanagawa and have played it many times. It looks equally elegant and calming.