How do I play this game?

The default keys are mouse left/right buttons and Z/X keys, which can be modified in the settings. On the game screen, the round disks are called hit circles. When the outer circle shrinks and overlaps perfectly with the hit circle, click on it. Some hit circles have a slider — hold the hit circle and follow the movement. When a large spinning disk appears, hold the button and rotate quickly around the center.

Why does the mouse movements feels delayed?

Try enabling "Raw Input" in the settings. This bypasses smoothing and accel, making the mouse movements more natural.

The game is laggy, what can I do?

Uncheck “Use system resolution” in settings, and choose a resolution lower than the system scaling (many laptops or high-res screens have scaling above 100%). Avoid high CPU usage — close antivirus software like 360 or PC manager, close other browser tabs, and restart your browser. Ensure you’re using a mainstream modern browser (e.g. Firefox, Chrome). If it’s still laggy, try submitting an issue

Why is there nothing in the page?

The mirror might be down, you can try contacting the admin to restore the mirror as well as the mirror site.

IDM keeps annoying me with downloads!

We use XHR to load beatmaps and some files, which can cause IDM to show up and try to download them. Try disabling IDM.

Can I upload beatmaps from my computer?

This can happen in the near future, but currently, it's not possible. You can still play uploaded beatmaps.

Audio and visuals out of sync?

Try using the audio offset feature in the settings. If it's still not working, you can submit an issue

Other issues

Feel free to submit an issue