Hogwarts Harem is a Unity adventure from Koister Games set in an 18+ summer program at Hogwarts. You play a male teacher supervising four witches, guiding their studies, discipline, and personal discovery while handling the temptations of close mentorship. The game uses animated 3DCG visuals and a fantasy setting centered on a male protagonist.
The current v1.1a build, released February 21, 2026, is still under development and runs on Windows and Android in English without censorship. This update adds 258 new renders, remakes 64 existing ones, and introduces Hermione Granger as a teacher’s assistant with her own storyline and extra teaching tools. Players can now invite completed characters to a bedroom at night, visit the Black Lake on weekends for new scenes, find more discoverable castle scenes, and use a magical detention punishment option.
Developer's description
You’ve been invited to teach an exclusive
18+
summer program at Hogwarts! Four talented witches under your supervision, each with their own charms, flaws, and secrets. Your task? Guide them through study, discipline, and discovery... while navigating the temptations that come with close mentorship.
v1.1a
322 New Renders!
258 brand-new renders added
(More than the total number of renders in v1.0)
64 existing renders re-made and improved!
(Over 30% of v1.0 renders!)
Hermione Granger Arrives!
Hermione joins the summer program as your Teacher’s Assistant, complete with her own storyline. She gives you more control and tools in how you educate your students.
Night Time Fun!
After completing a character’s story, you can now invite them back to your bedroom at night, with multiple activities to choose from.
A New Weekend Location!
Visit the Black Lake on weekends to discover new scenes with familiar characters, plus a new unique character.
That's Not All!
Numerous new discoverable scenes have been added around the castle.
Utilize a new magical detention punishment option.
A "Win Screen" has been added to clarify when the player has discovered all available content.
Cheat Codes (Patron perk): Use Incants in Hogsmeade on weekends to modify the game or unlock bonus renders.
An assortment of small tweaks and fixes to improve the game experience and performance.
v1.0
Initial Release
Player reviews
Player rating4.0 / 5 · 15 ratings
Written reviews15 · avg 3.0★
Positive (4–5★)53%
Latest review2026-03-10
What players say
Mixed: several rate it decent for AI visuals, while others dislike its grind, thin story, and repetitive characters.
5★1
4★7
3★2
2★1
1★4
Players like
AI art and animations are often praised as good.
Developer effort and potential are acknowledged.
The game is playable and well made.
Short adult scenes and corruption tone appeal to some.
Common complaints
Grind and short scenes limit content.
Story, characters, and choices feel thin.
AI art and character design are criticized.
Best for players who tolerate grinding and simple choices to view AI adult scenes.
Summarised from 15 written player reviews.
ChosenBum2026-03-10★★★★★
Great game and a huge improvement between 1.0 and 1.1. There are still mistakes and continuity errors, but if the developer keeps up the work, this can become truly good. I hope he gets his itch profile and Patreon back.
StanleyB2026-03-08★★★★★
Very good work by the developer, considering this is the beginning of your career. The graphics are great, though they have some minor flaws, but the direction is good. Games these days are often carbon copies of each other, like…
midway10242026-03-07★★★★★
As usual you's think AI cg would let the dev focus on making the gameplay and story better but nooooo, let's just make a stupid grindfest where you have no agency and have girls with one personality trait and no…
★★★★★(15)
