As of mid-2026, the official “New” edition is available on:
The full title is often listed simply as Mumasekai: Renewal or Lost in the World of Succubi – New Edition. Be careful of fake “mobile” versions—there is no official iOS/Android release.
This is the primary reason most players will buy the game, and in this regard, it delivers exactly what is promised. mumasekai lost in the world of succubi new
If you’re new to the series, here are five quick tips to survive your first run:
The story follows a protagonist (often depicted as a young adventurer or traveler) who finds himself transported to or trapped in a mysterious parallel dimension known as the "Succubus World." As of mid-2026, the official “New” edition is
In this realm, the dominant entities are succubi—supernatural female entities who sustain themselves by draining the life force (often depicted as "energy" or "vitality") of human men. The protagonist's primary objective is to navigate this dangerous world, survive the advances of its inhabitants, and find a way to escape back to his original world. The narrative explores the power dynamic between the trapped human and the supernatural residents who view him as both a plaything and a source of sustenance.
In the old version, succubi were static enemies. In the New edition, they adapt to your playstyle. If you run from fights, you encounter "Stalker-type" Succubi. If you fight aggressively, "Dominatrix-type" bosses emerge. The game literally learns how you want to be lost. The full title is often listed simply as
If you have played previous Dieselmine titles (specifically Muma, the game this seems to be a successor/spiritual sequel to), you know exactly what to expect.
Despite being an adult game, the Mumasekai series has been praised for its writing. One Steam review reads: “I came for the culture. I stayed for the existential dread. And then I cried during the Elegy route. 10/10.”