01 / Devlog, Sep 16 '21


GitHub: https://github.com/nebulousmango/Bouba-Kiki

Document references:

  • Game design doc: link


  • This mechanic is in the style of a hyper-casual game: a procedurally generated song could make an infinite mode possible, and players can watch ads to continue playing after failing.
  • Puzzle games were 2020’s most popular genre: this mechanic is a basic matching puzzle that can be made more or less difficult by increasing the rotation and shrinking speeds.
  • Live operations could involve adding music that’s newly popular in the countries with the biggest markets.


  • Rewarded videos: watch a video to continue a failed level
  • Interstitial ads: autoplaying video ads between levels
  • In-app purchases: buy bundles of in-game currency at different price points with real money. In-game currency is also earned by completing levels and is used to:
    • buy new songs
    • buy new instruments
  • Pay to remove ads: one-time payment to get rid of interstitials



  • Input: one-finger taps on the screen
  • Mechanic: 
    • Tap the shape that matches the one in the centre of the screen
    • The level fails if you tap anything that’s not the correct shape
    • The level ends when the timer runs out
  • Challenges: 
    • Find and tap on the object with the correct colour and shape before the timer runs out


  • Dynamics: after each correct tap, the shape in the centre is replaced with a new one
  • Procedural generation:
    • Replace shape in the centre with a new shape (one out of eighteen possible shapes)
    • Reduce timer length with every 5 correct taps


  • Age: young children (ages 5 to 10) and older people (a mode without timers could appeal to people with slow reaction times)
  • Genre: uses “twitch” gameplay, which requires quick and reflexive reactions. Gameplay also speeds up as the player makes progress. Uses a simple puzzle mechanic, which is one of the most popular genres in mobile games








Get Bouba-Kiki