Jardinains 2!, the sequel to Jardinains 1! (surprisingly enough) is a fairly straightforward game. You have a paddle.
You and the 'nains don't see eye to eye. They want to throw stuff at your paddle; you want to knock 'em off their bricks. Luckily, your ball is a great way to knock 'nains off bricks.
Once you've knocked the 'nains off the bricks, you can bounce 'em for points, bonuses, and personal gratification. These powerups will (usually) help you knock more 'nains off their bricks even faster than before, often with amusing results.