I got this game in a random Steam code birthday promo when purchasing 3 other games I was actually interested in. I have now played this more than all the games that I intended to buy's time combined. Fantastic game I wouldn't have tried otherwise. The best steampunk, match-3, rougelite, mech-builder I've ever played, granted it's the only one.
P.S. It gets bonus points for centering the game board.