Choices before complex maths
Early Burning Time included squares and roots. They could reverse a score dramatically, but distracted from reading and picking circles quickly. Both were removed after testing, leaving the four basic operations. The starting score became zero too.
Frequent multiplication made the other circles easy to ignore. Multiplication became rarer in normal play, while the final ten seconds reveal more circles and operations.
Turn the circle, keep its size
All circles have the same size. A useful calculation does not get a special size or colour. The screen focuses on a coin-like rotation from gray metal to a red calculation. Large scores stay as full numbers rather than shortened units.
When the red circles disappeared
Online testing revealed moments when every red circle disappeared. A delayed request for the next set left the screen empty. We changed delivery to buffer upcoming sets and refill before they run out, so a delayed request does not immediately become an empty board.
A ranking for more than first place
The ranking changed from one highest score to the top 1,000 registered rounds. More people needed a place to leave a result. Duplicate names had also overwritten existing records; this was fixed. Successful saving now locks that result’s name and button, making completion visible.