Grey Gnome Games, creator of Gate, has a crowd sale going on at game crafter. Dig Down Dwarf is another tin game like Gate.
It's not a solo game, but the creator said on Twitter that a solo mode would exist as a pdf you could download. Check the link for game info.
https://www.thegamecrafter.com/crowdsale/dig-down-dwarf
My solo mode discussion:
Thanks for the news, Frank!