Skip to content
🔒 Can't access from overseas? Enjoy Japan-exclusive content with JapanVPN →

The Mysterious Third Planet

    Home › R18 Games › The Mysterious Third Planet

    Synopsis

    One fateful night, the protagonist is attacked by aliens. After an emergency landing, he’s forced into a dangerous deal: lose a quiz game and he must provide his bodily fluids as fuel for their UFO. Thus begins his night-long battle for survival.

    Face off against 3 aliens plus a jellyfish group in this lighthearted H-game combining quiz challenges with visual novel-style adventure storytelling.

    The Mysterious Third PlanetThe Mysterious Third Planet

    Related Tags:

    R18 Games

    Interested? Get the free trial here ↓

    🛒 Buy on DLsite🔍 Also available on FANZA
    💡 Access blocked? Some DLsite content is region-restricted. Get a Japanese IP with JapanVPN to access all content.
    Sister Sites: Doujin Manga (JA) | Doujin Works (ZH-TW) | Doujin Games (JA) | Doujin Voice (JA) | Doujin Anime (JA) | Doujin CG (JA) | AV Videos (JA) | 🌐 JapanVPN
    🌐 Can't access from overseas? Try JapanVPN for Japanese content access →

    PRAffiliate Disclosure: This site contains affiliate links to DLsite and FANZA. When you make a purchase through these links, we may earn a commission at no additional cost to you.

    Terms & Conditions | Privacy Policy

    © 2026 CAMPs inc.