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Summary

Sogna combined the best of both worlds in VIPER-M1: a modern, Windows-based interface and a set of three smaller games, reminiscent of the earlier V series titles. Super-heroine story My Mothers features cover girl Mika in her attempt to rescue a prospective boyfriend. Coming of age tale Green Boy follows Natane and her two older sisters as they welcome a strange young man into their home. The May Works focuses on a schoolgirl, Maki, as she flees from an alien invasion of her hometown. [From Sogna Digital Museum]

Otoko no Ko Gakuen! ~3nin no Otoko no Ko-tachi to no Unmei no Deai, Soshite Boku-tachi wa Koi ni Ochiru!~
Otoko no Ko Gakuen! ~3nin no Otoko no Ko-tachi to no Unmei no Deai, Soshite Boku-tachi wa Koi ni Ochiru!~
NAN%
Tags
  • Only Trap Heroines
  • Trap on Male
  • Trap Heroine
  • Student Hero
  • Male on Male Sex
Rating 6.2621 Users
Doushin ~Sanshimai no Etude~
Doushin ~Sanshimai no Etude~
NAN%
Tags
  • Office Lady Protagonist
  • Unavoidable Heroine Rape
  • Multiple Protagonists
  • Heroine with Shorts
  • Protagonist with Voice Acting
Rating 5.62174 Users
Eien
Eien
NAN%
Tags
  • Checkpoints
  • Blind Heroine
  • High Amount of Bad Endings
  • Protagonist as the Only Male
  • No Quick Save/Load
Rating 6.4822 Users
Lolokemo Nikki ~Inu H Daisuki ○ Gakusei ga Roshutsu ni Mezameta Natsu~
Lolokemo Nikki ~Inu H Daisuki ○ Gakusei ga Roshutsu ni Mezameta Natsu~
NAN%
Tags
  • Consensual Sex with Animals
  • Loli Protagonist
  • Dogs
  • Bestiality
  • Exhibitionism
Rating 6.1433 Users
Mama wa Joshikousei
Mama wa Joshikousei
NAN%
Tags
  • P.E. Teacher Heroine
  • Family Life Comedy
  • No Common Sense Heroine
  • Non-blood-related Mother/Son Incest
  • Protagonist's Non-blood-related Mother as a Heroine
Rating 6.2728 Users
Princess Harem
Princess Harem
NAN%
Tags
  • Sexual Scenes with Gameplay
  • Interactive Touching Game
  • Prince Protagonist
  • Highly Animated Sprites
  • Princess Heroine
Rating 5.9428 Users
Majodou ~Ano Chirigiwa no Utsukushisa~
Majodou ~Ano Chirigiwa no Utsukushisa~
NAN%
Tags
  • Witch Heroine
  • Kemonomimi Support Character
  • American Heroine
  • Albino Heroine
  • Cats
Rating 7.3042 Users
Angel Bitch! ~Inran Dosukebe Chiloli to Boku no Sex Zanmai Seikatsu~
Angel Bitch! ~Inran Dosukebe Chiloli to Boku no Sex Zanmai Seikatsu~
NAN%
Tags
  • Title Parody
  • Nympho Heroine
  • Only Loli Heroines
  • Straight Lolicon
  • Heroine with Zettai Ryouiki
Rating 6.1633 Users
Réserve 1/2
Réserve 1/2
NAN%
Tags
  • Action Game
  • Demon Protagonist
  • Lesbian Sex
  • Female Protagonist
  • Girl x Girl Romance Only
Rating 4.7723 Users
Usugi Shoujo
Usugi Shoujo
NAN%
Tags
  • Straight Lolicon
  • Shotacon
  • Shota Protagonist
  • Straight Shotacon
  • Exhibitionism
Rating 6.1231 Users
Roshutsu de Asobou
Roshutsu de Asobou
NAN%
Tags
  • Elementary School Student Heroine
  • Sexual Fantasizing
  • Unlock All Scenes Option
  • Elementary School Student Protagonist
  • Exhibitionism
Rating 5.6130 Users
VIPER-RSR
VIPER-RSR
NAN%
Tags
  • Dungeon Crawling Game
  • Monsters
  • High Amounts of Rape
  • ADV
Rating 6.9436 Users
Viper-CTR ~Asuka~
Viper-CTR ~Asuka~
NAN%
Tags
  • Kendo Club
  • Flat Tints Only
  • Protagonist's Cousin as a Heroine
  • Fingering
  • High School Student Protagonist
Rating 6.9332 Users
Viper-GTS
Viper-GTS
NAN%
Tags
  • Succubus Heroine
  • Metal Bondage
  • Rape Victim Heroine
  • Demon Heroine
  • Kidnapping
Rating 6.6433 Users
Harem Mate
Harem Mate
NAN%
Tags
  • Realtime 3D
  • Free Camera
  • Manager Protagonist
  • Anime-looking 3D
  • Idol Heroine
Rating 5.9527 Users
GLO-RI-A ~Kindan no Ketsuzoku~
GLO-RI-A ~Kindan no Ketsuzoku~
NAN%
Tags
  • Short Sexual Scenes
  • Spontaneous Sex Scenes
  • University Student Protagonist
  • Teacher Protagonist
  • Businesswoman Heroine
Rating 6.14152 Users
Akibakei Kanojo
Akibakei Kanojo
NAN%
Tags
  • Otaku Protagonist
  • Incest Romance
  • Modern Day Akihabara
  • Genre Shift
  • Protagonist's Non-blood-related Sister as a Heroine
Rating 6.9246 Users
Tottemo Pheromone
Tottemo Pheromone
NAN%
Tags
  • Energy Transfer via Sex
  • Support Character with Ahoge
  • Cousin Support Character
  • Host Club Heroine
  • Waiting Staff Protagonist
Rating 5.96261 Users
Papa, Dakishimete Ageru ~Babumi na Manamusume no Bosei ni Amaete Nakadashi Zanmai~
Papa, Dakishimete Ageru ~Babumi na Manamusume no Bosei ni Amaete Nakadashi Zanmai~
NAN%
Tags
  • Fathercon Heroine
  • Protagonist's Blood-related Daughter as a Heroine
  • Blood-related Father/Daughter Incest
  • Widow(er) Protagonist
  • Sex on a Roof
Rating 6.2721 Users
The Mensetsu ~Naitei Hoshikerya Wakaru Daro?~
The Mensetsu ~Naitei Hoshikerya Wakaru Daro?~
NAN%
Tags
  • Casting Couch
  • Manager Protagonist
  • Rape by Deception
  • Office
  • Ending Scene Recollection
Rating 5.4071 Users
Experiment Pleasure
Experiment Pleasure
NAN%
Tags
  • Scientist Protagonist
  • Genetic Research
  • Raising Simulation
  • Serious Protagonist
  • Brief NVL Scenes
Rating 5.0248 Users
Réserve
Réserve
NAN%
Tags
  • Action Game
  • Tentacle Rape
  • Protagonist's Boyfriend as a Hero
  • Lesbian Sex
  • Female Protagonist
Rating 4.8428 Users
ATOM GRRRL!!
ATOM GRRRL!!
NAN%
Tags
  • Gangster Heroine
  • Casino
  • Lesbian Heroine
  • Modern Day United States of America
  • Kemonomimi Support Character
Rating 5.1878 Users
Miai Kekkon Shita Osanazuma ga Otoko no Ko Datta Ken
Miai Kekkon Shita Osanazuma ga Otoko no Ko Datta Ken
NAN%
Tags
  • Only Trap Heroines
  • Male Pregnancy
  • Hero with Beauty Mark
  • Arranged Marriage
  • Protagonist's Wife as a Heroine
Rating 5.8823 Users
Viper-V16
Viper-V16
38%
Tags
  • Martial Artist Protagonist
  • Anthology
  • Waitress Heroine
  • Underworld
  • Mind Control
Rating 5.7994 Users
Viper-V6
Viper-V6
27%
Tags
  • Flat Tints Only
  • Succubus Heroine
  • Anthology
  • Boobjob
  • Anal Penetration
Rating 6.1425 Users
Viper-GTS
Viper-GTS
25%
Tags
  • Succubus Heroine
  • Metal Bondage
  • Rape Victim Heroine
  • Demon Heroine
  • Kidnapping
Rating 6.6433 Users
Viper-CTR ~Asuka~
Viper-CTR ~Asuka~
23%
Tags
  • Kendo Club
  • Flat Tints Only
  • Protagonist's Cousin as a Heroine
  • Fingering
  • High School Student Protagonist
Rating 6.9332 Users
VIPER-RSR
VIPER-RSR
20%
Tags
  • Dungeon Crawling Game
  • Monsters
  • High Amounts of Rape
  • ADV
Rating 6.9436 Users
Usugi Shoujo
Usugi Shoujo
18%
Tags
  • Straight Lolicon
  • Shotacon
  • Shota Protagonist
  • Straight Shotacon
  • Exhibitionism
Rating 6.1231 Users
Roshutsu de Asobou
Roshutsu de Asobou
12%
Tags
  • Elementary School Student Heroine
  • Sexual Fantasizing
  • Unlock All Scenes Option
  • Elementary School Student Protagonist
  • Exhibitionism
Rating 5.6130 Users
Angel Bitch! ~Inran Dosukebe Chiloli to Boku no Sex Zanmai Seikatsu~
Angel Bitch! ~Inran Dosukebe Chiloli to Boku no Sex Zanmai Seikatsu~
12%
Tags
  • Title Parody
  • Nympho Heroine
  • Only Loli Heroines
  • Straight Lolicon
  • Heroine with Zettai Ryouiki
Rating 6.1633 Users
Réserve 1/2
Réserve 1/2
12%
Tags
  • Action Game
  • Demon Protagonist
  • Lesbian Sex
  • Female Protagonist
  • Girl x Girl Romance Only
Rating 4.7723 Users
GLO-RI-A ~Kindan no Ketsuzoku~
GLO-RI-A ~Kindan no Ketsuzoku~
10%
Tags
  • Short Sexual Scenes
  • Spontaneous Sex Scenes
  • University Student Protagonist
  • Teacher Protagonist
  • Businesswoman Heroine
Rating 6.14152 Users
Tottemo Pheromone
Tottemo Pheromone
10%
Tags
  • Energy Transfer via Sex
  • Support Character with Ahoge
  • Cousin Support Character
  • Host Club Heroine
  • Waiting Staff Protagonist
Rating 5.96261 Users
The Mensetsu ~Naitei Hoshikerya Wakaru Daro?~
The Mensetsu ~Naitei Hoshikerya Wakaru Daro?~
10%
Tags
  • Casting Couch
  • Manager Protagonist
  • Rape by Deception
  • Office
  • Ending Scene Recollection
Rating 5.4071 Users
Réserve
Réserve
10%
Tags
  • Action Game
  • Tentacle Rape
  • Protagonist's Boyfriend as a Hero
  • Lesbian Sex
  • Female Protagonist
Rating 4.8428 Users
Miai Kekkon Shita Osanazuma ga Otoko no Ko Datta Ken
Miai Kekkon Shita Osanazuma ga Otoko no Ko Datta Ken
10%
Tags
  • Only Trap Heroines
  • Male Pregnancy
  • Hero with Beauty Mark
  • Arranged Marriage
  • Protagonist's Wife as a Heroine
Rating 5.8823 Users
Hitozuma Dorei Kissa 2
Hitozuma Dorei Kissa 2
9%
Tags
  • Rape with Blackmail
  • Blackmail
  • Waitress Heroine
  • Lactation During Sex
  • Group Sex of Multiple Females and Males
Rating 5.7922 Users
Suzuka no Melody
Suzuka no Melody
9%
Tags
  • Non-penetrative Sex
  • Protagonist as the Only Male
  • Sex with Sleepers
  • Randomized Events
  • Interactive Touching Game
Rating 6.1753 Users
Boku Kano 3 ~ Otoko no Ko o Suki ni Naru Jun
Boku Kano 3 ~ Otoko no Ko o Suki ni Naru Jun'ai Triangle + 1
9%
Tags
  • Shotacon Protagonist
  • Brother/Brother Incest
  • Male on Male Sex Only
  • Trap Heroine
  • Male on Trap
Rating 6.3124 Users
Oku-san, Kane ga Nai nara Karada de Haratte Moraimashou ka? ~Hito no Tsuma-tachi no Ketsu o Narabete Tabekurabe! Netori Kissa Settai!~
Oku-san, Kane ga Nai nara Karada de Haratte Moraimashou ka? ~Hito no Tsuma-tachi no Ketsu o Narabete Tabekurabe! Netori Kissa Settai!~
9%
Tags
  • Sex Involving Prostitution
  • Model Heroine
  • Waitress Heroine
  • Cafe
  • Heroine with Pubic Hair
Rating 5.4628 Users
Eimmy to Yobanaide
Eimmy to Yobanaide
9%
Tags
  • Protagonist's Half-brother as a Hero
  • Debt
  • Protagonist with Big Breasts
  • Airhead Protagonist
  • Disappearance
Rating 5.43186 Users
Sex Anime Online
Sex Anime Online
9%
Tags
  • Title Parody
  • Fan-fiction
  • Scenario Selection
  • Fantasy
  • Nukige
Rating 6.1421 Users
HEARTWORK -Symphony of Destruction-
HEARTWORK -Symphony of Destruction-
9%
Tags
  • Pistol Combat
  • Ending List
  • Violence
  • Female Friend
  • High Amount of Bad Endings
Rating 5.97278 Users
Nuki Nuki Destiny!
Nuki Nuki Destiny!
9%
Tags
  • Softcore
  • Spelling Errors
  • Sexual Innuendo
  • Surreal
  • Heroine with Armpit Hair
Rating 5.1022 Users
Snow Drop
Snow Drop
9%
Tags
  • Perverted Friend
  • Blind Choices
  • No Auto Function
  • Ryokan
  • Low Fantasy
Rating 5.59366 Users
DOR
DOR
8%
Tags
  • Anthology
  • Scenario Selection
  • No Backlog
  • Autosave Only
  • Timid Heroine
Rating 4.31126 Users

Viper-M1 has not appeared in our Steam sample enough to calculate it's similar novels... sorry!
A novel needs atleast 20 owners before it's similarity is calculated.

Tags (26 total)

NameScoreImportanceWeight
Comedy Rape2.752.506.88
High Amount of Special Effects2.752.216.07
Anthology3.001.965.89
Slime Monster Rape2.502.095.23
Interactive Movie2.002.605.20
Superheroine2.002.575.13
Flat Tints Only3.001.614.84
Extraterrestrial2.002.284.56
Monsters2.251.924.32
Short Sexual Scenes2.001.833.65
Mecha Combat1.332.483.30
Mecha1.252.443.05
Plants & Flowers1.252.413.01
Game Over2.001.492.97
Comedy2.501.112.77
High Sexual Content2.501.052.63
Villainous Heroine1.252.072.59
Heroine with Eyepatch1.002.352.35
Female Protagonist3.000.712.14
Student Protagonist1.501.261.89
Sexual Content2.670.631.68
Heroine with Glasses1.501.111.67
BDSM1.001.651.65
Map Movement1.251.311.64
Group Sex of One Male and Several Females1.670.921.53
ADV2.000.150.29

Traits (68 total)

NameCharactersImportanceWeight
Power Armor Clothes23.213.53
Extraterrestrial Role22.442.68
Villain Role31.902.63
Chain Weapon Items13.412.36
Slime Role13.132.17
Slave Owner Role13.082.13
Rape Engages in (Sexual)21.821.99
Sexual Slavery (Non-consensual) Subject of (Sexual)12.761.91
Cowgirl Engages in (Sexual)21.721.89
Facial Piercing Body12.721.88
Turtleneck Tank Top Clothes12.711.88
Grandfather Role12.621.82
Avoidable Rape (obsolete) Subject of (Sexual)12.501.73
Sleeveless Sweater Clothes12.481.72
Older Sister Role21.561.71
Balding Hair12.441.69
Sleeveless Dress Clothes12.411.67
Granddaughter Role12.391.66
Green Hair21.481.62
Blouse Clothes21.471.61
Scientist Role12.281.58
Eyepatch Clothes12.241.56
Odango Hair12.151.49
Ahoge Hair21.321.45
Shopkeeper Role12.091.45
Cyan Hair12.031.41
Beret Clothes11.991.38
Overweight Body11.991.38
Ribbon Tie Clothes21.251.37
Tanned Body11.901.32
Blue Hair21.191.31
Blue Eyes40.801.29
Twin Braids Hair11.861.29
Hidden Eyes11.811.25
Lab Coat Clothes11.801.25
Hair Ribbon Clothes11.791.24
Deredere Personality11.741.21
Missionary Engages in (Sexual)11.741.21
Teal Eyes11.731.20
Glasses Clothes21.081.19
Doggy Style Engages in (Sexual)11.691.17
Intake Hair11.671.16
Nail Polish Body11.631.13
Spiky Bangs Hair21.001.10
Rape Subject of (Sexual)11.561.08
Orange Hair11.511.05
Necklace Clothes11.501.04
Younger Sister Role11.441.00
Teen Body40.621.00
Earrings Clothes11.420.99
Jacket Clothes11.420.98
Masturbation Engages in (Sexual)11.390.96
Grey Hair11.380.96
Tsurime Eyes11.380.96
High School Student Role20.850.93
Pink Hair11.330.92
Fighting Engages in11.290.89
Dress Clothes11.250.87
Long Hair20.750.83
Shirt Clothes11.160.80
Necktie Clothes11.110.77
Miniskirt Clothes11.060.74
Green Eyes11.020.70
Sidehair Hair10.980.68
Short Hair20.610.67
Doggy Style Subject of (Sexual)10.930.64
Young-adult Body10.760.53
School Uniform Clothes10.750.52