Fate/Grand Order is readily available on mobile devices worldwide, but the Arctic Summer World event is only on the Japanese server.
For those suffering in the summer heat, Scathach Skadi has a present: the Arctic Summer World summer event is now underway in the Japanese edition of Fate/Grand Order.
Arctic Summer World plays in a similar way to other events in Fate/Grand Order.
The free Servant for Arctic Summer World is one of the Valkyrie sisters.