Insaniqaurium an aqaurium on the computer
To kill monsters you click on them as your cursor turns into a gun once the monster appears unless it is the monster that you have to feed in which case buying better food and more will help to feed it too much faster or if you do need to shoot it you can upgrade your gun and shoot on the opposite angle of which direction you want the monster to go.
To get to the next tank and unlock more pets you need to buy a whole egg, the egg comes in pieces (about 3-4). When you have finished the "story" mode you can play challenge mode where the price of everything goes up rapidly and the monsters get stronger until you buy the entire egg at which time you will go through to the bonus round where you have to try catch as many shells as possible by clicking on them and if you click on the same type you get combo bonus and the shells are worth more each time. The purpose of the shells is that you can buy different tanks, special pets and different potions etc. The only way to get shells is when you buy an egg, the bonus round and if you go into the virtual tank, where the special fish are, these special fish whiile getting bigger drop shells that are worth more as they grow.
Overall this game provides hours of entertainment for all ages and is extremely good for its size and get be downloaded for free (trial) from www.pogo.com or can be brought for approximately $10 using credit/debit card.