Characters come at you in waves that share a radical. Write each one before it reaches the desk — stroke order and direction both count. Every third wave sends back the ones you keep dropping.
Start from a preset, then change anything you like
Vocabulary
Writing
Stroke matching — order and direction always count
Pace — you can change this mid-run. On No clock nothing advances down the lane and nothing can get past you.
Writing square — Large gives the paper more of the screen and the lane less. Remembered on this device.