Synopsis
A simple action RPG filled only with interspecies love-making.
It’s an age of swords and magic.
The gods have hidden themselves away, but evil is still rampant.
Those who fight back against evil are called… “Adventurers”… This is their era.
Nana has just taken her first step as a new adventurer.
She’s traveled to the remote Zerani Village, a place threatened by monsters…
Basic Controls
Perform your actions with the attack and item buttons.
-Attack Button
Swings your sword
Hold it down for a spin attack
-Item Button
When pressed together with the directional keys, lets you select from three different types of potions.
Regarding Erotic Scenes
-Interspecies sex ONLY
All erotic scenes involve interspecies sex. There are no scenes involving male humans.
When taking damage, Nana’s HP is reduced,
and she is subjected to naughty attacks by monsters.
The lower her HP drops, the more unhinged their attacks become.
-Monsters You’ll Encounter
Goblins
Slimes
Sand Worms
Ropers
…and others, totaling up to 16 different types.
-Pregnancy and Birth
When a monster plants its seed inside you, there’s a chance you’ll become pregnant.
Once you’re impregnated, you can only wait to give birth.
*You can give birth to all monster species featured.
-No Game Overs
This game contains zero game overs.
If you are defeated, you’ll be carried away to a monster nest.
Do your best to make an escape.
These nests contain treasure, and if you make it out safely, the treasure is yours to keep.
-Other Erotic Scenes
Fool around with sub-characters
Piss and wet yourself
Get milked, etc.
| Circle | Sondake |
| Tags | R18, Role-playing, Voice, Music, Application, DLsite Official Translation, English |
| Price | 1,980JPY |
Editorial Review
Monster Nest positions itself squarely in the niche overlap between action RPG mechanics and monster-girl erotica, a subgenre that’s seen steady interest but rarely commits fully to making the combat loop itself integral to erotic escalation. Most entries in this space treat gameplay as a wrapper around static scenes; this title inverts that by making HP depletion the narrative engine driving sexual intensity, which is a structurally smarter approach than the genre typically manages.
The interspecies-only constraint is the work’s most distinctive decision. By eliminating human-on-human sex entirely and focusing exclusively on monster encounters—goblins, slimes, sand worms, ropers, and others—the developer sidesteps the player-fantasy power-fantasy dynamic that dominates mainstream adult games and instead commits to a purely alien aesthetic. This creates consistent tonal coherence: Nana isn’t being rescued or seduced by a love interest, she’s being overwhelmed by forces fundamentally incompatible with human biology. The progressive damage system that escalates monster aggression as her health drops elegantly ties mechanical failure to narrative consequence, making every dodge and healing potion decision matter both tactically and erotically.
Production quality appears solid given the official DLsite English translation and included voice acting and music, suggesting this isn’t a low-effort passion project. The attack/item control scheme suggests accessible but deliberate combat—hold-down spin attacks and directional potion selection indicate enough mechanical depth to create tension without demanding frame-perfect inputs.
This will resonate most strongly with players who prioritize monster/creature aesthetics over human romance and who appreciate when game design and sexual progression actually reinforce each other rather than work in parallel. If interspecies-only content and combat-integrated eroticism align with your preferences, this executes its premise with unusual mechanical clarity. Casual action RPG enthusiasts or those seeking human-centric romance should look elsewhere.
Get “[ENG Ver.] Monster Nest ~Nana’” on DLsite
English Version → Free TrialJapanese Original
This Week’s Top Rankings:
Related Tags:
R18 | English | Application | Music | Role-playing
📖 How to buy on DLsite — step-by-step guide
💳 Payment methods for overseas buyers (Visa/MC declined?)
Official English version available ↓

![[ENG Ver.] Monster Nest ~Nana's Interspecies Love-Making Adventure~](https://img.dlsite.jp/modpub/images2/work/doujin/RJ01185000/RJ01184973_img_main.jpg)
![[ENG Ver.] Monster Nest ~Nana's Interspecies Love-Making Adventure~](https://img.dlsite.jp/modpub/images2/work/doujin/RJ01185000/RJ01184973_img_smp1.jpg)
![[ENG Ver.] Monster Nest ~Nana's Interspecies Love-Making Adventure~](https://img.dlsite.jp/modpub/images2/work/doujin/RJ01185000/RJ01184973_img_smp2.jpg)
![[ENG Ver.] Monster Nest ~Nana's Interspecies Love-Making Adventure~](https://img.dlsite.jp/modpub/images2/work/doujin/RJ01185000/RJ01184973_img_smp3.jpg)
![[ENG Ver.] Monster Nest ~Nana's Interspecies Love-Making Adventure~](https://img.dlsite.jp/modpub/images2/work/doujin/RJ01185000/RJ01184973_img_smp4.jpg)





