King of Sluts

Forbidden Thoughts is a highly addictive card battler you can play instantly in your browser on mobile or PC. You inherit a magical necklace that lets you challenge the gorgeous girls around your local magic school, and beating them in a Gwent-style duel unlocks some truly hot rewards. The narrative embraces fun, playful roleplay rather than anything overly dark, making it feel like you are just breaking down the walls of stubborn tsunderes who secretly want it anyway.

The gameplay loop is incredibly engaging, focusing heavily on a strategic deckbuilder system where you match elemental cards like Frost, Fire, and Earth. Since every opponent brings unique immunities to the table, you will need to constantly adapt your strategy and swap decks to secure victory. While the standard story battles offer a great challenge, the rogue-like tournament mode at the academy is a total blast that you definitely need to try.

Instead of relying on complicated MTG mechanics, the math is refreshingly simple, allowing you to focus on collecting special wildcard multipliers to trigger lewd scenes. You will be eagerly grinding for better stats and equipment, building the perfect hand to conquer the cafe owner, your childhood friend, and various academy students.

Press Play and start directly in your browser. Forbidden Thoughts plays online on mobile and PC, with no download and no sign-up required.

About the Developer: Created by Yumi20 - support the developer for updates and more work.

Game Info: Ren'py adult simulator | by Yumi20 | Deckbuilder / Card Battler / Romance | English.

Updated to 0.3.1 on February 27th 2026.

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