I'm trying to find japanese browser game that's about Norse mythology, I believe there was 2 games in the series. It was available in English.
Basically, you started with some chick (Valkyrie?) and then would send her to various locations on the map, she'd auto-farm those and gain gold/exp/items(?)/unlock new characters from Norse mythos. At the endgame you were able to sacrifice characters to Ragnarok(?) or some cave or whatever, to power it up and increase difficulty and gains in there.
The interface was the map of the world and character list or something.