Bubbles float up from the bottom of the screen, each carrying a single letter from A to Z. Press that letter on your keyboard, or click it on the on-screen A to Z pad, and the bubble pops. You start with five lives, lose one every time a bubble escapes past the top, and the game ends when lives reach zero.

A normal bubble scores 10 points and a golden one scores 50, with roughly 15 percent of bubbles appearing gold and popping with a higher-pitched sound. Popping bubbles in quick succession builds a combo that multiplies your points up to five times. The combo clears if you go two seconds without a pop, or if a bubble escapes.

Yes, and it happens automatically rather than through levels you pick. As your score climbs, bubbles rise faster and spawn more frequently. There is no timer and no difficulty setting, so the only thing that ends a run is losing all five lives.

No. It tracks score, lives and combo only, so there is no WPM or accuracy reading, and it uses single letters rather than words or sentences. Pressing a wrong letter costs nothing; only escaped bubbles cost a life, and your final score is shown on the game over screen but not saved.