Feed customers, get money, and take out loans! Before each round, you'll need to click on the Cat-Directing-Car 9000 to let customers know you're open for the day. You feed customers by shooting fish out of your fishy turret! Each wave, a group of kitties will come from the left side of the screen, ready for your product. Shoot your fish at each kitty to get a satisfied, paying customer! If one of the customers doesn't get fed, then you'll lose money! Press W or UP to slide it up and S or DOWN to slide it down. Left Click to shoot out a fish to serve your customers. Each fish shot out costs money, so don't give out too much of your product for free!

At the end of each round, you'll get to check out your loans. Each turn, you can take out loans to help your business. However, not every loan may help your business, so you'll need to pick which ones are best for you. At the beginning of the game, you start with a positive 5% interest rate, meaning you earn 5% money back. Simple interest will grow at a steady fixed rate while compounding interest is interest on interest, which means it adds onto itself and grows with the new amount. However, some loans can alter the interest rate to increase or decrease it for simple or compounding interest.

When offered a loan, the text will either be green (positive outcome), yellow (mixed result), or red (negative outcome).If you don't like the loan provided, you can negotiate up to 3 times per round by clicking the "Negotiate" button. If you end up not liking the loan, you can decline to take it by clicking the "Not Interested" button. If you like the loan, click "Take it."

Finally, you can use your remaining money to buy upgrades for your shop! If there's a red exclamation mark on your shop, that means you can purchase a new upgrade. Click on the shop, then click on the upgrade you want to purchase.

At the end of the 15 turns, the bank will come and demand fish! Shoot your fish at the bank vault without going bankrupt to earn maximum profit! Even if you defeat the vault, another challenger will come at the end of the game...