Iron Gate Studio’s single-player and co-op survival gameValheimhas proven to be a major success in the month since its release in early access. According to Steam’s sales charts,Valheimhas reached the milestone of five million salesin just four weeks and currently boasts an Overwhelmingly Positive review rating on the site.

The world ofValheimis vast, with a variety of biomes to traverse, each with its own unique flora, fauna, enemies, and dungeons to explore. But the game also contains a few enigmas, such as themysterious shadowy figure inValheimwho occasionally appears when players least expect it. The man stands motionless for a moment, staff in hand, and then vanishes. Many players have attributed the wraith-like apparition to Odin, the Norse god of war.

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Recently, another puzzling mystery has made an appearance inValheim,this time with a less foreboding aura. A player has reported that birds have begun inexplicably flying off with their boats in the game. A recording was shared on Reddit that showed aValheimshipcalled the karve, a medium-sized sailing craft, flying into the air in a decidedly humorous fashion. One theory is that birds in the game are landing on the boats and accidentally having ownership transferred to them, thereby causing the vessel to take off when the bird does.

A PR representative at Iron Gate responded to this rumor, stating that the company has received a few inquiries about the issue but that birds aren’t actually flying off with ships inValheim, despite appearances. However, the representative did not proffer a potential explanation for the phenomenon either, and a bird can indeed be seen on the flying ship in the posted video.

Perhaps this is simply a rare bug thatValheim’sdeveloper has been unable to reproduce and therefore has no opinion to share on the matter. Another potential explanation could be that the Redditor who shared the video of his flying ship is using mods just to have a little fun with the gaming community. Because it is a PC game, there are a variety of mods already available for the title, as well as a debug mode that allowsplayers inValheimto flyaround themselves.

Valheim,with its robust base building mechanics, has allowed players to freely express their creativity. Inventive gamers have recreatedStar Wars’Millennium Falcon, Old Tristam fromDiablo,Sauron’s Tower fromThe Lord of the Rings,and a group of players are even in the process of building the entire town ofWhiterun fromThe Elder Scrolls V: Skyrim.