Fih is an indie simulation game for PC that turns your desktop into a living aquarium. Fish swim across a transparent overlay on your screen while you work or browse, growing from eggs into adults as your everyday typing and clicking provides the food they need. The experience stays out of the way because clicks pass through to whatever lies beneath unless they hit a fish, pellet, shark, or interface element.
Gameplay
Every keypress and mouse click registers as one input. After every thirty inputs a pellet drops, drawing hungry fish that eat, gain weight, and advance through life stages from egg to baby, child, teen, and adult. Once mature, each fish generates gold every ten seconds. Five minutes of this passive income equals the fish's own sell price, so the tank continues to earn even when the player steps away. No fish starves.
Three egg types hatch into twenty-nine species total: ten ornamental fish, ten mid-size edible varieties, five legendary rarities including the coelacanth, and four meme-inspired uniques such as CatFih, ShoesFih, Dih, and SelFih. Each individual also rolls its own rarity tier. Base artwork starts as a black crayon sketch on white paper, with rarer fish receiving pale blue coloring, legendary fish appearing in gold, and unique specimens displaying a shifting rainbow effect. Hatching a species once adds it to the permanent collection.
An in-game paint panel allows players to create custom looks for any species. Multiple saved appearances per species sit in a gallery, and newly hatched fish randomly wear one of the available styles. Eight upgrades improve passive income, sell income, feeding rate, food value, auto-clicks per second, rare chance, tank capacity, and combat power. Players can select which monitors the fish may roam across, and the aquarium automatically hides during fullscreen applications. Korean and English language support is included.
Game Modes
Fih runs as a single continuous simulation without separate game modes. The core loop of raising fish, collecting species, customizing appearances, and defending against occasional threats operates in one persistent desktop environment. The only risk element appears when sharks arrive every eight to fifteen minutes, signaled by a blinking warning and siren. Adult fish fight the intruder while the player can click to add damage. Success yields a growing reward, while failure results in lost fish. This remains the sole way to lose anything in the game.
Progression and Collection
Progress centers on hatching eggs, unlocking new species, and refining individual fish through rarity rolls and custom art. Upgrades expand tank capacity and improve efficiency across income, feeding, and combat systems. The collection grows steadily as players hatch each species for the first time, encouraging repeated egg rolls to fill out the full roster of twenty-nine varieties and their visual variants.
Is It Worth Playing?
Fih suits players who enjoy low-maintenance idle companions that run alongside normal computer use. The transparent overlay, click-through design, and privacy-focused input handling keep the experience unobtrusive. Passive gold generation and the ability to customize fish appearances add light progression without requiring constant attention. Because the game has not yet released, no player reviews or ratings exist to gauge broader reception. Those drawn to desktop pets, simple collection mechanics, and relaxed simulation will find the verified systems align closely with that preference. The upcoming Q4 2026 release will clarify long-term support and community response once available.