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One-stroke puzzles

Neon LinkOne Stroke Puzzle

Trace every line of a shape exactly once, in one continuous stroke, without lifting your finger. 100 hand-designed levels, then endless ones, all free and fully offline.

Google Play: coming soon

How it plays
Platform
Android
Version
1.0.0
Price
Free
Package
com.neonlink.game

How it plays

One shape. One stroke. No lifting.

  1. 1

    Pick a level

    Start with 100 hand-designed levels across five packs: Basics, Shapes, Patterns, Complex and Master.

  2. 2

    Trace it in one stroke

    Draw through every line of the shape exactly once, in one continuous stroke, without lifting your finger.

  3. 3

    Keep going

    After the packs come endless generated levels. A solver checks every level, so each one can be solved.

Features

Everything in the box

  • 100 hand-designed levels

    Five packs, from Basics through Shapes, Patterns and Complex to Master.

  • Endless levels

    When the packs are done, a seeded generator keeps new levels coming.

  • Always solvable

    Every level is checked by a solver to be solvable.

  • Hints, undo and reset

    Get a nudge, take back a move or start the shape again.

  • Strict and Relaxed modes

    Two stroke modes: Strict and Relaxed.

  • How-to-play tutorial

    A built-in tutorial shows you how to play.

  • Original sound and music

    Synthesized sound effects and background music made for the game.

  • Haptic feedback

    Haptic feedback as you play.

  • Neon visual style

    Neon styling throughout the game.

Privacy first

No ads. No tracking. No internet.

  • Completely free: no ads, no in-app purchases, no subscriptions.
  • No accounts and no sign-in.
  • No analytics, advertising IDs, crash reporting or data-collecting SDKs.
  • Requests no Android permissions, not even internet access.
Read the privacy policy

Built with

Native Android, end to end

  • Kotlin

    Native Android, built in Kotlin.

  • Jetpack Compose

    The UI toolkit the app is built with.

  • Canvas rendering

    A custom puzzle board drawn on Canvas.

  • DataStore

    Progress and settings, stored only on the device.

  • Euler-path solver

    Verifies every level and powers the hints.

Neon Link is an offline, ad-free one-stroke puzzle game for Android. I designed and built it natively in Kotlin and Jetpack Compose, with a custom Canvas puzzle board, an Euler-path solver that verifies every level and powers hints, and a seeded generator for endless levels.

Screenshots

See it in neon

Screenshots coming soon.