Choo Choo Pop cover art: a waving panda train conductor driving a blue-and-gold steam train through green hills
Puzzle · KidsAndroid

Choo Choo Pop

A railway puzzle for little conductors.

About the game

A railway puzzle game for kids: draw one unbroken track from the entry tunnel to the exit, matching the number beside every row and column.

The idea

We wanted a puzzle game young children can pick up without reading any rules, with difficulty that keeps growing and levels that are always fair.

How we built it

Choo Choo Pop is built with React and a top-down canvas board, packaged for Android with Capacitor. A level script and solver produce 60 levels across three stages, and each one is tested to have exactly one solution. English and Persian live in one build, and GitHub Actions tests, builds and publishes every release.

Feature highlights

  • 01

    60 levels, one answer each

    Three stages of station puzzles, from tutorials to super-hard boards, each with exactly one solution.

  • 02

    Several tracks at once

    Later levels add up to four tracks on one board, plus gates inside the board next to tree blocks.

  • 03

    Power-ups and rewards

    Star, Eraser and Peek tools, daily and weekly missions, and a lucky wheel.

  • 04

    A panda guide

    A panda conductor tells the story and walks new players through their first levels.

Choo Choo Pop

Screenshots

  • Choo Choo Pop screenshot — Home screen
    Home screen
  • Choo Choo Pop screenshot — Level map
    Level map
  • Choo Choo Pop screenshot — Gameplay
    Gameplay
  • Choo Choo Pop screenshot — Customize your train
    Customize your train
  • Choo Choo Pop screenshot — Lucky wheel
    Lucky wheel

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