The current path end is the only board node in the tab order. Use the arrow keys to
extend the path. Move toward the previous node to undo one step.
3
History & Stats
High-score
Locally saved challenge runs and your best stats.
Best Challenge0Fastest Challenge--Campaign Solved0Runs in History0
Campaign by Difficulty
Difficulty
Solved
Best Time
Avg Time
Win Rate
Challenge Run Stats
Full Runs--Avg Score / Run--Avg Time (Full)--Avg Solved / Run--Avg Undo / Run--Avg Hint / Run--
Run History
Run Detail
Progression
Achievements
Unlock milestones in campaign and challenge.
Team
Credits
Built with love for puzzles.
SmartProc Games
Thanks for playing One Stroke. The goal is a sharp logic game with a clear feel in every move.
Paste Challenge Code
Your friend has sent you a challenge code. Paste it below.
Level Complete
Nice. You visited every node exactly once.
Time0:00BestFirst clearCampaign1 / 200
Level Select
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One Stroke — One-Line Drawing Puzzle Game
Play One Stroke free in your browser — a clean, modern take on the classic one-line drawing
puzzle. Each board is a Hamiltonian path challenge: visit every playable node exactly once in
a single connected stroke. With 200 campaign levels, Daily and Weekly
leaderboards, Bonus Paths, friend challenges, mastery medals and 31 trophies, it's easy to
pick up and genuinely hard to put down. No download, no signup — just draw.
How to Play One Stroke
Drag from the highlighted start node to any neighbouring node to begin your path. Keep
extending the line one step at a time — the level is solved the moment every node has been
visited exactly once. Campaign levels normally have a free end; the optional Bonus Paths
event adds a marked goal and a limited undo budget.
Drag (mouse or finger) from node to node — orthogonal steps only.
Drag back along your path, or press Z, to undo one step.
R resets the level, H shows a hint for the next recommended node, N jumps to the next level.
Hints are free in campaign mode but cost score in the daily challenge.
200 Campaign Levels, Four Difficulties
The campaign takes you from gentle warm-up grids to genuinely brain-bending boards across
four difficulty tiers: Easy, Medium, Hard and Very Hard. A full level-select screen lets you
search and filter every level by difficulty and status. Bronze, silver and gold mastery
medals reward cleaner clears, while best time and performance stats are tracked as you go.
Daily Challenge & Streaks
Every day brings a fresh set of five levels that are the same for every player in the world.
Your first complete run is the ranked attempt; later replays are clearly marked practice.
Compare score and time, build a streak and review the last seven UTC days. Weekly Challenge
adds a longer ten-level run, while friend codes enable split-by-split head-to-head play.
Trophies & Leaderboards
One Stroke includes 31 trophies across four tiers — 15 bronze, 10 silver,
5 gold and 1 platinum — covering campaign milestones, challenge feats and everything in
between. Your challenge runs are saved to a local high-score history with detailed per-run
stats, and signing in to GameVolt syncs your achievements across devices.
Plays Great on Mobile
One Stroke is built mobile-first. Draw your path with a fingertip, use the bottom tab bar to
flip between the board, menu and stats, and reach Undo, Reset, Hint and Next from dedicated
touch controls right below the board. The grid scales to any screen size, from phone to
desktop.
Free, Instant, No Download
One Stroke is part of GameVolt — a curated collection of original free
browser games. Nothing to install and no account required to play. Progress is saved locally;
sign in to sync across devices.
One Stroke FAQ
Is One Stroke free to play?
Yes. One Stroke is 100% free in your browser with no download and no signup. Sign in to GameVolt only if you want your trophies and progress synced across devices.
What kind of puzzle is One Stroke?
It's a Hamiltonian path puzzle, often called a one-line or one-stroke drawing puzzle. You must visit every playable node on the board exactly once in a single connected path, moving only in orthogonal steps.
Do I have to finish the path on a specific node?
Campaign, Daily and Weekly boards normally use a free end. Bonus Paths are the exception: they mark a specific goal node and limit how many times you can undo.
How many levels does the campaign have?
There are 200 campaign levels spread across four difficulties: Easy, Medium, Hard and Very Hard. A full level-select screen lets you filter by difficulty and by solved, unsolved or locked status.
Is the daily challenge the same for everyone?
Yes — each UTC day, all players get the same five levels. Your first completed run is ranked; later runs are practice and cannot overwrite that leaderboard attempt.
Can I challenge a friend?
Yes. Create a five-level friend challenge, finish your run, then share its code or cloud link. Your friend plays the identical boards and gets a split-by-split comparison.
Does One Stroke work on phones and tablets?
Yes. Just drag your finger from node to node to draw the path. A bottom tab bar and dedicated touch buttons for Undo, Reset, Hint and Next make one-handed play comfortable on any screen.
