The English U.I is a bit awkward but i managed to figure out the game.
Its an semi-idle fish collecting game where you can open card packs of fish that will earn you money overtime. Each set of packs are based on locations with rarities ranging from common, rare, epic, legendary.
The light bulb icon on the top right allows you to do a cs-go trade in style way to offer up minimum 2 fish (if you dont want to lose them you can pay a more to preserve them) to receive an uncollected fish from their set, this allows you to get those pesky legendaries you need to finish off a location set, I just wish it had some sfx like the csgo clicking from their crate unboxing.
You can rename your fish to personalize them.
The little poo icon shows the giant fish you can receive when you fulfill their 4 fish prerequisites, once you collect all giant fish from a set you can select the fish food and hold right click to place for the fish, they poo and you can hold click to collect them for money, yep yep.
There are income fish tanks you can buy that are separate from your on-screen fish and can be upgraded to increase their own cash flow by up to 200%.
The fishing mode is an arcade style mini-game to earn money with various equipment such as:
The base fishing hook which sways left and right
A cannon which shoots a bullet that explodes into a fishing net
A mouse hand where your cursor collects the fish
Boomerang flies out then returns once it hits the edge
Bouncy ball, controlled like a brick breaker game
Red fish are sick and will damage you 1 heart, yellow outlined fish are worth more, and the RGB outlined fish are worth alot.
There are modifiers you can add to increase difficulty, score (+2 each added modifier) and money per fish, like starting with only 1 heart instead of 3, -40 strength and or speed, -20 luck, -10 sick fish probability (which i think is supposed to be +10 since it actually decreases sick fish from 10% to 9.09%) etc
Each stage you can buy items to increase and or decrease stats or get duplicate hooks/shots/balls.
You can buy "decorations" buy new music, backgrounds, skins, lights, and camera lens! (thank you DeepSea for your quick work to fix bugs! <3 )
Its fun, its a bit rough around the edges, but I see the concept, and I really like it.