Closely related to the Haleakala silversword ("Argyroxiphium sandwicense" subsp. The entryway features a tiled drinking fountain with a Silversword tiled motif. This grouping is often referred to as the silversword alliance . The 2011 Xbox 360 game "Eschatos" includes both "Judgement Silversword" and "Cardinal Sins" as extras. One notable species is Mauna Kea silversword ("Argyroxiphium sandwicense" var. This plant is related to the silversword alliance of Hawaiian plants. The small natural population of silversword was augmented through the 1970s with outplanted individuals. M-KAI released "Judgement Silversword" as a freeware demo on his personal website in 2001. The other subspecies, "Argyroxiphium sandwicense" subsp. "sandwicense" (Mauna Kea silversword), is found on Mauna Kea. "Judgement Silversword" was created by independent Japanese designer "M-KAI". Many elements of gameplay from the 1980s Bard's Tale games are evident in Silversword. The silversword alliance is named for its most famous and visually striking members, the silverswords. The silversword flowers only once in its lifespan of 20 to 90 years.