Thanks for checking out my game :)
At first I thought it'll be quite easy to look at some viking-themed icon line art and manually type in co-ordinates in game engine. It turned out to be very time consuming at later stages of the jam, and also the simpler 3-arrow image was probably the hardest to figure out, so def it works better for more detailed images.
If I decide to pick it up again for full game, I'll probably work on developer tools first to make it easier to add proper art :)