In Rubble Sort, the player tilts the Android to move a series
of colored buckets back and forth across the screen. The
player’s goal is to catch falling objects in like-colored
buckets. To speed up the pace of falling objects, players
can swipe down on the screen or scroll the mouse-ball.
Players collect and sort objects falling from mechanical
arms. As players get more adept at catching falling objects,
the mechanical arms move faster, and objects drop at an
increasingly faster pace.
The player’s score increases whenever they successfully
get an object in a bucket (10). Combos create multipliers
(score+2*n), and missed objects or misplaced objects break
combos. Players receive bonus points for getting an object
into the bucket faster than its natural fall time by using
the D pad (or trackball).
The game ends when the player misses an objectand has no
more lives to use.