Bump the Balls

1. Press on an empty area and drag to draw a line.
2. Let go to finish the drawing — gravity then sets the balls moving.
3. Get the two balls to touch each other to clear the level.
4. Use a hint if you're stuck.

Bump the Balls is a physics puzzle where a single line decides everything. Each level has two balls that need to meet; you draw a line anywhere on the empty space, let go, and gravity takes over. Sometimes a simple platform or ramp does the job, but later levels add obstacles, hazards and moving parts that call for a more elaborate route — and more precision in how you draw it. Before drawing, it's worth imagining where each ball will roll once it's released. There are 100 levels with steadily rising difficulty, and a hint is available when a solution just won't come.