Sinful Summer


Join Erik and Lyna, two young people caught in a passionate web of forbidden passions, as they set off on an amazing voyage. Their reunion after a year abroad, set against the stunning background of a private tropical island property, ignites a furious exploration of emotions that push the limits.

They grow closer and find it harder to resist the pull of their newfound sentiments as they balance the line between suppressed emotions and mutual attraction. Will they give in to temptation or repress the call of their primitive instincts when a third unique person approaches? Explore the complexities of this captivating story through a dynamic graphic novel, where love, boundaries, and desire converge in fascinating ways.

Since this is my first project, I would really appreciate any constructive comments. I sincerely hope you enjoy yourself while playing this pleasant tale!

HOW TO PLAY (Keyboard)

Use Enter to advance dialogue and activate the interface.
Press Space to advance the dialogue without selecting choices
Hit the Arrow keys to navigate the interface.
Press Escape to access the game menu.
Use CTRL to skip the dialogue while held down.
Select Tab to toggle dialogue skipping.
Press the Page up to roll back to the earlier dialogue.
Press the Down page to later dialogue
Press H to hide the user interface.
Use S to take a screenshot.
Use V to toggle assistive self-voicing.
Press Shift+A to open the accessibility menu.


Left click– Advances dialogue and activates the interface.
Middle click– Hides the user interface.
Right-click– Accesses the game menu.
Mouse Wheel up click rollback side– Rolls back to earlier dialogue.
Mouse Wheel down– Rolls Forward to later dialogue.


Unique Storyline

The compelling story of Sinful Summer centers on the forbidden love between Erik and Lyna, twins. You will be captivated by this intriguing plot throughout the entire game.

Exquisite Visuals

Beautiful 3D computer-generated graphics (3DCG) that breathe life into the people and the tropical island mansion elevate the game. As you immerse yourself in this passionate story, take in the lovely surroundings.

Engaging characters

You can choose from a variety of protagonists, so you can read the story from various angles. You will be able to relate to the well-developed emotions and desires of every character

Interactive gameplay

You’ll come across decisions that affect how the story ends as the game progresses. The characters’ outcomes and the course of their relationships will depend on the choices you make.

Sensual romance

Sinful Summer tantalizes your senses and sends you on an emotional rollercoaster while deftly examining the subtleties of forbidden love. Enter a world where conventions are challenged by desire and passion.


  • 3D
  • Adult
  • Eroge
  • Erotic
  • Kinetic Novel
  • NSFW
  • Porn
  • Ren’Py
  • Romance


Hello! I’m currently developing:

Sinful Summer: A Tale of Forbidden Love

I love adult visual novels so I set out to make my own!  The latest completed chapter will always be free here, but if you enjoy the story, please consider supporting me at my SubscribeStar to help with the development! 

You’ll get some goodies like early access to releases, previews of future versions, development updates, and access to a discord server, among others.


Frequently Asked Questions

What is a Sinful Summer?

Sinful Summer is a kinetic Adult Visual Novel developed by Ruykiru.

Who developed the Sinful Summer?

Sinful Summer was developed by Ruykiru.

When is the next update?

The timing of the next update is not specified, but  Ruykiru will keep players informed about it through its social media accounts.

When was the initial release of the Sinful Summer?

Sinful Summer was released on 02/15/2024.

Where can I report bugs?

 Bugs can be reported on the game’s Discord server. You can also post a comment on the itch comment sections.

Will you add more characters to the game?

Given that the game is still in its early development stage, there is the potential to introduce more characters to enhance and expand the gaming experience. Stay tuned for updates and the possible inclusion of new characters as the development progresses.

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