Small, wallet-sized game with fast gameplay and a math element that's slight, yet makes for some good thinking. Solo mode is great, and provides four difficulty levels. I think I'll play this solo more than with people, but I wouldn't be opposed to playing with others, either.
A Grand Solo Experience
I enjoy real-time games, so it is little wonder I really enjoy Proving Grounds. Fast, fun, and difficult to boot--a good mix for a solo games. Full review here: http://www.everythingboardgames.com/2019/07/proving-grounds-review.html
Fun game. ...
Fun game. The hidden actions make it a mind/bluffing game. Each game is different, and the setup can change, too, making it easier or harder, depending on the players. The advanced rules using character abilities and flag decoys makes it even better. Looking forward to playing this more.