Goal

Letters fly across from every side. Tap every vowel — A, E, I, O, U — before it leaves the screen, and let every other letter fly past. Y never appears.

Levels

• Catch 8 vowels at a level to move up; 3 mistakes in a row move you down one.
• Higher levels bring more letters, more vowels and more speed.
• From level 4, look-alikes join in: Q, C, G and D beside O; V beside U; F beside E; J and L beside I.
• From level 5 some letters are lowercase; from level 6 they tilt and spin; from level 7 they fly curving paths.

Scoring

A vowel earns 2 + the level, plus 1 for every 5 in a row (up to +3). Tapping a consonant costs 2 + the level. A vowel that gets away costs 3. Both reset your streak.

Go / No-Go Control

Acting fast on the right thing while holding back on everything else is inhibitory control — the skill behind not blurting, not clicking, not reacting to every ping.

Selective Attention

Look-alike letters punish a quick glance. Checking each one while the field keeps moving trains attention that is fast and accurate at once.