Cassel Games
Based in Seoul, Republic of Korea

Release date:
November 2019 (Steam)

July 2021 (Android)


Window, Mac, Android, iOS




Ratropolis is a real-time card game that uses cards to defend a rat's city against enemies. With quick judgment and swiftness, you must defeat upcoming enemies . Build your OWN Ratropolis with various cards that you can get from playing the game. 


Cassel Games is an indie game dev team made up of students from Sogang game school in South Korea. We've been hard at work on our debut project, Ratropolis.


  • Cute rats are protagonists instead of feral cats
  • Time is resource, real-time deck building card game
  • Highly engaging game requiring quick judgment and response of the players
  • Various random elements giving new experience every round
  • Intense game play with short playing time
  • Unlockable elements, making the players stronger after each plays
  • 6+ different leaders! Each with their own styles and traits.
  • 500+ unique cards

Awards & Recognition

  • "Best Project" Nexon Dream Members, 2018
  • "Gold Prize in Bachelor catagory" Global Indie Game Development Contest, 2018
  • "Korean Game Academy Award" Global Game Challange Awards, 2018
  • "Nominated for Best Student" MWU Korea Awards, 2019
  • "2nd place" New Gyeonggi Game Audition, 2019
  • "Rising Star Award" Busan Indie Connect Festival, 2019
  • "Nominated for Top Selling" Steam Award, 2019
  • "Top 6" Indie Craft, 2020

Ratropolis Credit

  • SungJin Hwang
    Game Director, Cassel Games

  • SunWoong Lee
    Programmer, Cassel Games

  • MinSu Kim
    Concept & Background Artist, Cassel Games

  • GaYeon Ham
    Card & Event Artist, Cassel Games

  • JunHyeok Park
    Animator, Cassel Games

  • TaeGyung Yeon
    Object Artist, Cassel Games

  • Remi Agullo
    Music Composer, Contributor

  • TaeGyun Kim
    Sound Design, 

  • ChaeHo Sin
    Scenario Writter, Contributor

  • SungAn Hwang
    Translator, Contributor