Heat, Cat in the Box, and boop are my favorites I've played from this list. I didn't care for Endless Winter at all. Flamecraft was fine, but would only play it if someone really wanted to.
The only thing Flamecraft has going for me is the $40 SRP. Cheaper than Waterdeep, Stone Age and other worker placement games, and even a playmat bigger companies would try to sell you separately!
Its also been great as a cheaper entry to placement and resource gathering games.
But pretty bare bones aside from a clever solo video-game-unlockable design I'd like other board games to add to their solo games.