Fate/stay night [Realta Nua] is a visual novel adventure game developed by TYPE-MOON for Android platforms. The game is a smartphone application that features the original and primary storyline of the Fate series. The game is free to download and play, but additional routes, such as Unlimited Blade Works and Heaven's Feel, are available for purchase.

The game is fully voiced and has high-resolution graphics optimized for smartphone screens. Players can enjoy the game in either landscape or portrait orientation. The game follows the story of seven mages who summon seven heroic spirits to compete in a battle for the Holy Grail, which can grant any wish. This is compatible with Android OS 4.0.3 and later.