HOW TO PLAY
Controls and goals
- How to operate
- Compatible with mice, graphics tablets, and touch screens. You can also select the brush by holding down the left button and moving it with the 1 key.
- Goal
- Protect Aria from glitches and collect energy to repair layers of artwork
ABOUT THE GAME
Battle of the canvas.
The restoration progresses step by step.
"One Voice - Canvas Defense" is an action game by PixelDrake and zzzablo. Brush away glitches with brushes and other drawing tools, and gather energy to repair Aria's artwork.
BRUSH IN ACTION
To the approaching glitch,
Overlap brush ranges.
On the posted screen, multiple black glitches approach Aria in the center, and the area of effect of the brush is displayed as a light blue ring. The display on the right is "Layers Open: 2/7", and the next attack and defense is progressing after layer repair.

Actual play photography: Detour Playlist Editorial Department/Production: PixelDrake, zzzablo
Remove glitch with brush
The effect area is displayed on the brush with a light blue ring. Brush away the approaching glitch and prevent it from approaching Aria.
Repair layer with energy
As you prevent glitches and collect energy, the layers that make up Aria's artwork will open in sequence.
More tools and enemies in 12th stage
The official press kit guides you through all 12 stages and explains that new drawing tools, enemies, and mechanics will be added as you progress.
PLAY NOTES
Play notes
- Required time
- The official press kit takes at least 40 minutes, and the official itch.io average session takes about 1 hour. The latter is a one-time session guide.
- Language
- Available in English and Japanese
- Fees/Support environment
- You can play the official itch.io WebGL version for free. The author recommends the newer WebGL version over the download version, and it is compatible with smartphones and touch operations as well as PCs.
- Display/operation adjustment
- The official page recommends 1920×1080 and full screen display. If the cursor is difficult to follow, you can adjust it with the optional calibration
Seven layers,
Let's get back to the end.
On July 28, 2026, we checked the author's official itch.io distribution page and official press kit for the work description, language, operations, and required time. The two published images were taken by the editorial department using the official WebGL version. Sources: One Voice - Canvas Defense — PixelDrake official itch.io, One Voice Official Press Kit
STREAMING INFO
Streaming and video uploads
We checked the author's official itch.io and official press kit, but we could not confirm the conditions that allow the general public to use live game streaming, live streaming, video posting, and monetization. The press kit's commercial use permission is for when the material on the same page is used for news reporting, and is distinguished from the game distribution permission. Please check with the creator for the latest conditions when distributing.
“Unconfirmed” does not mean streaming is prohibited. We have not confirmed an official policy for the general public.




READER COMMENTS
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