No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $331.3K — a different platform, not this one.

Valhalla Hills

You're spending your whole life to please your gods. You're fighting and dying an honorable death. And now this! The poor Vikings are standing in front of Asgard's gates, waiting to enter Valhalla. But the ungrateful Gods won't give them what they deserve, closing the gates right in front of them. Although, a true Viking never gives up. If it's impossible to enter Valhalla the traditional way, then why not just walk in there? But the usually pretty strong Vikings don't seem to cope well with the danger and challenges of the mountains. Look after your Vikings, gather food, chop wood and take care of the well-being of your small but growing population. Reach the portal on top of the hills, this is the only chance to get your Vikings closer towards their well-earned reward. As in classical building games, it's essential to increase the productivity of the Vikings by puzzling out an ambitious and balanced economic system in Valhalla Hills. From the developers of classics like “The Settlers 2” and the “Cultures”-Series Be prepared for randomly generated levels with various challenges Look after your Vikings' needs Improve constantly, use your knowledge and achievements for the next map Earn your place in Valhalla, for your Vikings and yourself