ISOR aka In Service of Retia

Ryu (default name) is an ordinary guy who gets involved in not so ordinary things. Working as a bartender and living a somewhat monotone and idle life with his sister and mother he rarely sees due to her work obligations.

One night Ryu finds himself in a peculiar dream that turns to be something far more life changing. From an idle life he is involved and brought into a world of fantasy and conflict.

Question is, will he manage to juggle between the two worlds and two different ways of life, whilst in service of a goddess who’s only concern is her restoration to power and domination?​


Developer: Mystic CRO –
Censored: No
OS: Windows, Android
Language: English
Genre: 3DCG, Sandbox, Male Protagonist, Romance, Big Tits, Oral Sex, Animated, Incest, Milf, Teasing, Virgin, Fantasy, Harem, Titfuck, Monster Girl, Religion, Loli, Vaginal Sex

1. Extract and run.


  • Chapter 5 Story Content Start
  • Fixed all the grammar issues reported to me so far
  • All reported bugs so far fixed!
  • Big Quality improvement! (Equipment got upgraded! Yay!)
  • Renders are now 1600 x 900
  • – Side Note on this: Some scenes MAY -NOT- fully be shown due to sudden increase in resolution, as the game was initially intended for 720 and was made as such.
  • – Then again what you sometimes notice is very minor and can be forgiven for quality upgrades I’d dare say!
  • Added sex scene control (Basically some buttons so you can go back and forth and finish when you want)
Rating: 2.6/5. From 62 votes.
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Anonymous Fapper

nope just nope. the dialog is CRINGE AF, MC intelligence is -1000, interactions with other caracter are borderline stupid. unless dev hires writers i don’t see a future for this.


I cannot stand these garbage anime games. I haven’t found a single one that has been worth playing, and talk about being reptitive – each and every one uses the exact same type of art.

Anonymous Fapper

ISOR? more like “EYESORE” am I right fellas

Anonymous Fapper

Thats what I thought before clicking on anything. I wonder this is the artists first try and decided to troll himself.

The title screen doesn’t look bad if you like that kind of stuff. I prefer the Daz 3D perfection without the the ridiculously unrealistic proportions that some people go for. To each their own, Hats off to the creators.

Anonymous Fapper

needs improvement, its not bad tbh. Since its still early development it seems alright,