★★★★★(20)
He Who Vowed to Create a Demon Harem
by Avantgarde
About He Who Vowed to Create a Demon Harem
This adventure game is made by Avantgarde in RPGM, using 2D CG artwork. It is set in 1887, when demonic invaders have attacked humanity and special fighters called heroes push back. You play Theo, a hero aiming to reclaim the city of Manc from the demon-controlled Halfas family. Strange events place him with three demons, and the group begins a long journey together. They start as enemies, but a special item helps their relationship shift, blending fantasy and corruption themes.
The current build is version 1.13, dated May 16, 2025. It is a released game for Windows in English, with no censorship. Updates continue through bug fixes and translation work, including a new GPT4o translation. The latest changelog entry, dated May 18, 2025, records the addition of a 072 version.
Developer's description
What happens when a hero falls for the demons he’s supposed to destroy? Spoiler Strange circumstances bring a human hero together with three demons, and the four of them set out on the adventure of a lifetime. They don’t work well together at first, but after a while (and with a little help from a special item), these old enemies will start to REALLY get along… The year is 1887. Humankind has been assailed by demonic invaders from hell. For a time, humanity’s future was uncertain… until brave soldiers arose who fought back the demons. These soldiers are called heroes. One such hero, a man named Theo, has a goal in mind: take back the city of Manc from the demons who control it, the Halfas family. But the daughters of said family ended up being a lot cuter than he expected…
He Who Vowed to Create a Demon Harem screenshots
Download He Who Vowed to Create a Demon Harem v1.13
Changelog
Player reviews
What players say
Most players rate it positively, though some criticize combat, pacing, and inconsistent romance.
Players like
- Art and character designs are praised by many players.
- Voice acting is appreciated and helps offset translation issues.
- Non-NTR harem premise with pregnancy and corruption appeals to some.
- Scenes, story options, and character interactions provide plenty of content.
Common complaints
- Combat is basic, grindy, and lacks equipment choices.
- Romance progression feels rushed and inconsistent with scenes.
- Translation, bugs, and technical problems reduce overall polish.
Best for players who like non-NTR demon harem RPGs with art and voice acting.
Summarised from 20 written player reviews.
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