Support
Replies usually take a few days.
Reporting a problem
It helps a lot if you include your iPhone model, your iOS version, and what you were doing when it happened. A screenshot is welcome.
How do I play?
Plates of sushi fall four pieces at a time. Fill a whole row to clear it. Tap the board to rotate, drag to slide, pull down to soft drop, flick down to hard drop and flick up to hold. The on-screen buttons do the same. You can open How to play from the main menu at any time.
What are the orders and Sorted bonuses?
The ticket at the top asks for a number of one kind of sushi. Clear rows containing it to serve the order for bonus points and a calming tea break that slows the belt. Clear a row with six or more of the same kind for a Sorted bonus.
My best scores disappeared
Best scores are saved only on your device. Deleting the app, or erasing the iPhone, removes them, and they are not backed up to any server.
Turning the music or sound off
Use the two buttons at the top right of the menu and the game. The game also follows your iPhone's silent switch.
Accessibility
Nigiri Stack supports VoiceOver (the game board has actions for moving, rotating and dropping plates), Dynamic Type up to a point, and Reduce Motion. If something doesn't work well for you, please tell us.