http://gpvdip7rd7bdy5gf7scl3rzgzgzckqw4sqxbmy6g3zijfwu4lz3ypbyd.onion/Personal/reviews/games/wesnoth.html
Especially for long singleplayer campaigns with many levels - where gold reserves are mostly dependent on the previous level, and keeping high level units alive is critical since you mostly can only fresh recruit level 1 units which would be painful dealing with the enemies' level 2 and 3 hordes, one bad luck is a lot. I sometimes have to save-and-reload, and occasionally cheat by adding more golds, because of spending too much and didn't finish early in previous level(s).