OwOGG is a free collection of browser mini-games: reaction, aim, memory, typing, puzzle and arcade games you can play instantly without installing anything, with per-game leaderboards.
One Stroke
Trace every line exactly once without lifting. Solve eight figures and beat your own time; Hard adds one-way lines.
One Stroke
Trace every line exactly once, in one continuous stroke, without lifting. You may pass through a dot as often as you like, but no line may be drawn twice.
The rule fits in one sentence; the figures do not always give in. Pick the wrong starting dot and you will be stuck with one line left over.
How to play
- Tap a dot to start.
- Tap the next dot along a line you have not drawn yet, or press and drag through the dots.
- Tap the previous dot, or press Undo, to take the last line back. Reset clears the figure.
- When every line is drawn, the figure is solved and the next one appears.
- Solve all eight figures. The result shows your total solving time.
Difficulty
Normal, Hard
Figures, 8, 8
Lines per figure, 6 to 13, 12 to 19
Grid, 4 × 4, 5 × 5
Direction, Any, About a third of the lines are one-way (arrows)
Every figure is generated from a real single-stroke route, so every figure can be solved.
Your time
- The result shows the total time spent solving the eight figures, to a hundredth of a second (0.01 s).
- There is no leaderboard. Every run draws different figures, so a time is yours to beat rather than a
ranking to compare.
- The short celebration between figures is not timed, and the clock stops while paused.
- Undo and reset are free apart from the time they take. The result screen counts them.
Controls
Action, Mouse / touch, Keyboard
Start / draw, Tap or drag through dots, —
Undo, Undo button, or tap the previous dot, Backspace or Ctrl+Z
Reset, Reset button, —
Pause, Pause button, Esc or P
The game pauses itself when it loses focus. Sound, reduced motion and the interface language (English, Korean, Japanese, Chinese) can be changed in the game's top bar.
Tip
Count the lines that meet at each dot. If exactly two dots have an odd count, the stroke has to start at one of them and end at the other. On Hard, follow the arrows backwards from a dead end to find where the stroke must begin.