Isekai Incubus is a 2D RPG Maker adventure game by Merkonig. The presentation uses animated 2D CG artwork, and the story follows a male protagonist reborn into a fantasy world as an incubus. He uses his ecchi power to dominate his new surroundings in the fantasy world, mixing exploration, quests, and story scenes.
Development is ongoing rather than being a demo or finished release, and the current build is v1.3 Uncensored, released on April 5, 2022. The uncensored build runs on Windows and supports English and Japanese, with no censorship. The latest update introduced fresh story content, changed Kana's first quest so it becomes an interaction instead of automatic, and fixed bugs involving Beardman and Aria appearing after obtaining a ring.
Developer's description
When you reborn in fantasy world as a Incubus. Conquer the world with your ecchi power!
v1.3
Uncensored
Change&Updates
-new story
-Kana first quest now turn into interaction instead of auto.
bug fixed
-Beardman and Aria should appears after you got a ring.
Version 1.2B
bugfixed
- Beardman should not talkable before a quest
- No black screen after seconed times you peek through the key hole in Shlovis inn.
- Bandit's cave should not activate scene again after helping Wua.
- A devil in Shlovis castle has been removed.
Version 1.2
change and updated
-new love scenes and quests.
-Southern forest now has 3 floors and less complicate.
-Eastern forest f2-1 is removed, and Eastern forest f2-2 is now f2-1.
-You will warped to village after getting "Julia's candle quest" and warped again to forest after getting "Candle"
v1.1B
patch note:
Change and update
+Add treasure boxs in Shlovis city.
Bug fixed
-Julia and Fiona should not appears after defending village.
-City-guard moved to the front of Inn on Kana greeting.
-Inn employee now spawn corectly
-Giving Bottle of booze to a man's condition is fixed.
v1.1 patch note:
Content and updates
+New story and love scene.
+"Potion" renamed to "Potion LV.1"
+"Super Potion" renamed to "Potion LV.2"
+"Magic water" renamed to "Magic water LV.1"
v1.0B
Bug fixed
+Dark wraith 's elementals system should work properly.
+Anna pee scene should not show on "Skip to 0.3" and "Skip to 0.6"
+Anna pee scene is added from "Skip to 0.3" and "Skip to 0.6"
+Northern forest should not able to enter before Oka 's quest.
Isekai Incubus 1.0
Change&Updates.
+New story and love scene
+You can change battle formation on menu.
v0.9B
Bug fixed
+Player should able to enter the eastern forest cave for Mineral water quest.
+Skill "Falcon thrust" of Aria is moved to the left side for easier command.
+Quest Icon on Wua should not appear after got quest.
+"skip to 0.6"
-Anaconda should not appear in the forest.
-Life herbs are added in bag.
-Anna pee scene should not run when you enter eastern forest.
-SAVE file that saved after receiving "Mineral quest" from Wua in village CAN NOT be use due to cave bug. Please use new save file for continue.
v0.9
+New content& changes
-new story and quests.
0.8 public
New content& changes
+New story, dungeon and service scene.
+New monster's drops are added to old monster.
-Evil Spore - Poison Spore
-Hornet - Bee sting
-Bandit - Empty bottle
+Crafting system - You can make special item, weapon, armor or accessory by collecting a bunch of items from monster to NPC in Fran village.
Bugfixed
+Removed actors after Tree of life dungeon done.
+Julia, Jane, Aria should not appeared in the village wia the first Tree of life quest.
v0.7c
Bug fixed
-Added missing gallery in "skip to 0.3"
-Bunch of items, weapons, armors and money are added to "skip to0.6"
-Most Gallery should works more properly. Especially Smesno's scene.
-150 LP added after taking panty
-"Life herb" now can revive friend as it should be.
-remove rice crates and guard that should not appeares.
-talking with Jane outside cave is now works as it should be.
-added Quest icons for old quests.
v0.7b
New content& changes
-"Skip to 0.6" now added.
Bug fixed
-Wua appears in the village before time.
-minor bug in Gint's room
-Gint's back door should work properly now.
v0.7
New content & changes
-New area open
-New quests
-New love scene
Bug fixed
-Minor bug and typos
-Fran village mission - Monsters are still chasing MC after MC hit the goal.
-Fran village - rice crates not despawn properly.
v0.6 Public
New content& changes
-New area and dungeon
-New Story
-New service scenes
-All ultimate skills are available from level 1.
-More clearer instruction on"Luring monster for rice"
-King Smesmo scene added to gallary.
-A gate to Anaconda is now more noticeable.
Bugfixed
-"Skip to 0.3" unlocks all scene properly.
-Minor bug on Oka healing scene.
v0.5B
New contents
-New zone and quests.
-Main Quest icon.
-Gallery is now open.
Bug fixed
-Oka's icon now displays on battle scene.
-"Skip to 0.3 contents" now works properly.
-Some battle skills should works properly.
-Oka is now up on God's realm. <<<0.5B fixed.
v0.4b
New content
-Old forest near the village renamed to Eastern forest.
-Southern forest maps
-more story
Bug fixed
-Fixed Jane appears in Forest after Dirt quest.
-Fixed Pushing rock toward wall freeze the game.
-Fixed Julia burst appears after the quest. (0.4B)
v0.3c
New content
-Quest sequel of Oka and bandit
Bugfixed
-Enter and exit cave easier.
-property’x’ of undefined error shouldn't appears.
-water drop sounds still plays even outsides.
-bandit block the rope.
Player reviews
Player rating3.0 / 5 · 15 ratings
Written reviews15 · avg 2.9★
Positive (4–5★)33%
Latest review2025-10-26
What players say
Mixed but negative-leaning reviews praise art and lewd scenes, while criticizing combat, progression, and missing content.
5★4
4★1
3★3
2★3
1★4
Players like
Nice artwork and character designs
Solid lewd scenes with decent pacing
Fun premise and appealing characters
Common complaints
Slow, frustrating combat gives no experience
Impossible fights and punishing difficulty block progression
Too few scenes, including missing main-character content
Best for players who enjoy fantasy smut with strong art and tolerate weak combat.
Summarised from 15 written player reviews.
spacezombie2025-10-26★★★★★
It´s just bad. The story is completly wasted, nothing interesting happens, the MC being an Incubus isn´t really felt. The translation is bad. Music gneric. Battles are bad, and they don´t even give exp. The maps are awfully boring. The…
whatmi2025-09-13★★★★★
Fun game Pros: Good music Nice Artworks lovely map designs solid lewd scenes Cool quest design (boring, but author did their best to make them okey) Cons: backtracking maps respawning enemies who stand in thin corridors Balance/difficulty is very high…
Yerman932025-05-21★★★★★
I honestly wanted to give this more starts because the concept is fun and the designs are really cool... But the game showed us 3 beautiful women with the Mother, the Knight and the Elf and you dont get to…