San Navi Prequel-themed New San Navi Overture: Ghostly Day, released globally on the 27th
Nov 27, 2025
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Neowiz announced on the 27th that it has officially released 'Sannabi Oejeon: The Day of the Ghost' developed by Wonder Potion worldwide.
'Mountain Butterfly Overture: Ghostly Day' was released through the global PC game distribution platform Steam. It is the prequel (a story ahead of time) of this book 'Sannabi', with the theme of 'Origin of Signal'. The main character 'Major Song' goes back to the past when he first encountered 'Junjang', fulfilling his duties as a robot disposal site, digging into the secrets hidden in it and struggling to survive.
This exhibition is a 2D action flatformer game that features the most endless aerial action. Show brilliant action using knives, shotguns, and bursts (overload ability to produce explosive power when met with conditions). Users can continue their battles using jumps and aerial shotguns, and they can enjoy their own aerial action battles by combining various skills such as quick leaps and direction changes using shotgun launch recoil. It consists of seven general stages and two types of bosses, including a scenario of about two hours.
'Mountain Butterfly Overture: Ghostly Day' supports a total of 11 languages, including Korean, English, Japanese, and Spanish (Europe and South America). The price is free, and anyone who has the main episode 'Sannabi' can play it. In commemoration of the launch of the external exhibition, Steam will offer a 35% discount on the main book 'Sannabi'.
Meanwhile, 'Sannabi Overture: Ghostly Day' participated in 'Game·ESports Seoul 2025' and 'G-Star 2025' and China 'Wiplay Expo' and was well received by fans even before its release. The new trailer, which was released on the 13th, exceeded 320,000 views on YouTube, further raising expectations for the game, Neowiz said.
This article was translated by Naver AI translator.
