99 Eggs is a perfect waste of time. There are more involved, entertaining, and (arguably) better games you could play, but there is an undeniable appeal to each quick round.
The goal is simple - catch 99 eggs. A swipe of the screen creates a line that catches the fragile shells as they simultaneously drop. Each level your line shrinks, luckily so do the number of eggs as they shatter on the ground.
The quick rounds, intuitive controls, and 2D physics made 99 Eggs a wonderful dip-in distraction.