[PC] [pre-2018] Flash game where you played as Vikings taking over towns

Platform: Computer, possibly other Genre: Strategy Release: Pre 2018, might be pre 2016 Art style: cartoonish, Vikings and snowy Notable characters: there was this one boss who I think was some kind of yeti/ice giant Notable gameplay mechanics: you played as a group of Vikings, you could attack towns and bosses (I think) on a map, and once you took over a town you could upgrade it in some way to extract more money. This money was used to get troops. Other: I think you got the troops from a boat, and the boat had circular shields on the sides