Quickdraw
Wait for the signal, then react. Five rounds reward a fast average without false starts.
Eight ways to train attention.
Each game isolates a different kind of decision. Sessions are short, scores share a 0–2000 scale, and first-time instructions stay separate from active play.
Spot the Shift
Find the one color that differs as the grid grows and the contrast narrows.
Sudoku
Five increasingly demanding boards, from compact row-and-column logic to classic 9×9 Sudoku.
Heartline
Switch between tip direction and motion direction according to the heart's color.
Word Tides
Build real English words from a changing prefix across three timed rounds.
Sequence Circuit
Repeat an ordered signal as its length rises from three to fourteen steps.
Shape Turner
Identify the same three-dimensional block structure after rotation—not reflection.
Number Trail
Connect adjacent numbers and operators to reach a target along a valid arithmetic route.