If you cannot find your answer below, contact us from the contact page (Japanese).

General

Is UCHU ZAMURAI free to play?
Yes. It is fully free with no installation and no account signup.
Which devices can run it?
Most modern smartphones and desktop browsers can run the game smoothly.
Do you have an app version?
Not yet. UCHU ZAMURAI is a browser-first game, so you can play instantly from the web.

Gameplay

How do I control the games?
Galaxy Onigiri Run and Comet Beam are one-button games. Meteor Intercept uses only left-right movement with auto-fire. Samurai Block Breaker uses left-right paddle movement plus a tap or Space launch.
How many game modes are available?
There are currently four: Galaxy Onigiri Run, Comet Beam, Meteor Intercept, and Samurai Block Breaker.
Do you have strategy guides for each game?
Yes. You can read the Galaxy Onigiri Run guide, Comet Beam guide, Meteor Intercept guide, and Samurai Block Breaker guide.
How long is one run?
Most runs take about 30 seconds to 3 minutes, depending on your skill level.
Can I retry right away?
Yes. After the result screen, you can restart immediately.

Troubleshooting

The screen is black. What should I do?
Enable JavaScript in your browser, then reload. Also make sure your browser is up to date.
The game feels laggy.
Close other heavy apps or tabs, and check whether hardware acceleration is enabled in your browser settings.
Does switching tabs erase my score?
No. Browser background throttling may pause the game temporarily, but saved data remains in local storage.