Jardinains 2!, the sequel to Jardinains 1! (surprisingly enough) is a fairly straightforward game. You have a paddle. You have a ball. You have a whole bunch of bricks. Inside these bricks live 'nains. 'Nains are cute little critters who pop out of their bricks every now and then to have some fun and give you a headache.
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 amüsing results.