# Flippy the Train

> Puzzle

Canonical page: [https://chrome-stats.com/d/id957889052](https://chrome-stats.com/d/id957889052)

## Overview

- **ID:** `id957889052`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Karl Voskuil
- **Category:** Puzzle
- **Rating:** 5.00 / 5 (5 ratings)
- **Version:** 1.7
- **Last updated:** 2025-12-15
- **First published:** 2015-02-12
- **Size:** 3.07 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/flippy-the-train/id957889052)
- **Privacy policy:** [http://hilogames.com/privacy.html](http://hilogames.com/privacy.html)

## Description

Build a train track to solve digital circuitry puzzles!

Flippy the Train rides the rails, flipping switches to model basic digital circuitry: NOT, AND, and OR logic gates.

After building these basics, reuse them in larger tracks to create the more-complex XOR gate and half-adder. What is the fewest number of track segments required to build a half-adder?

Includes a sandbox mode for creating arbitrary track for Flippy to ride.

## Rankings

- #437,277 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id957889052)