3-6 min
Big Fish Eats

Big Fish Eats

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Start as the smallest thing in the tank. Eat anything smaller, dodge anything bigger, and grow until nothing outranks you.

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Home / Reaction / Big Fish Eats

Big Fish Eats is a free online big fish eat small fish game. You start as a minnow in a tank full of fish, and the only rule that matters is size: anything smaller than you is food, anything bigger ends the run on contact. Every fish carries a ring — green means you can eat it, red means it can eat you — so the judgement call is never about eyesight, it is about whether you can reach the green one before the red one reaches you. Growth is deliberately slow at the top end: your size is the square root of what you have eaten, so doubling your length costs four times the food and the last stretch of every level is the tense one. A dash meter gives you a short burst of speed for the moments a hunter picks you out, and it refills only while you are cruising. Six tanks, from a shallow reef of drifting fish to a trench where most of what swims past is actively looking for you. No download, no account.

How to play Big Fish Eats

  1. You are the green fish. Steer by moving the pointer where you want to go, or with the arrow keys or WASD.
  2. Every other fish has a ring: green means it is smaller than you and edible, red means it is bigger and lethal.
  3. Swim into a green-ringed fish to eat it. Your size goes up by part of what you swallowed.
  4. Touching a red-ringed fish ends the run immediately. There are no lives and no invulnerability.
  5. A fish with a white ring is too close to your own size to eat — you swim straight through it.
  6. Hold the pointer down, or hold shift, to dash. The Dash meter under the tank drains while you use it and refills while you cruise.
  7. The bar above the tank is your progress toward the target size. Reach it to clear the level.
  8. If the clock runs out before you reach the target, the level is lost. Finishing with more time left scores more stars.

Tips

  • Eat the biggest green fish you can reach, not the nearest one. Ten minnows and one mid-size fish take the same time and the mid-size fish is worth far more.
  • Growth slows on purpose — size is the square root of what you ate — so the last quarter of the bar always takes longest. Budget the clock for it.
  • Save the dash for escaping, not for chasing. Food does not run away nearly as fast as a hunter closes.
  • Wary fish flee when you get inside about a third of the tank. Approach them from the side they are already swimming toward instead of from behind.
  • A red ring turning green is the loop of the game: fish you had to flee ten seconds ago become the meal that finishes the level.
  • Corners are traps. The tank walls stop you dead, and a hunter that pins you against one has already won.
  • The red border flash means something on screen outranks you. If it is on constantly, you are hunting in the wrong half of the tank.
  • Fish leave the tank at the sides. If nothing edible is nearby, swim toward the edge you last saw food entering rather than waiting in the middle.

FAQ

Is Big Fish Eats free to play?

Yes. It runs in the browser with nothing to install, no account and nothing to buy. All six tanks are included and unlock as you clear them.

How do I know if a fish is safe to eat?

By its ring. Green means smaller than you and edible, red means bigger than you and lethal, white means too close in size to matter either way. The rings exist because guessing relative size across a moving tank is the part players actually get wrong.

Why does growing get so slow near the end?

Because size is stored as mass and drawn as its square root. Doubling your length costs four times the food. That is deliberate: the alternative accelerates, and a level that accelerates is over before the interesting part starts.

Can I get stuck with nothing left to eat?

No. The spawn table watches how much edible food is actually in the tank and forces small fish in when the share drops too low, at every size you pass through. A tank where everything outranks you would end a run with time on the clock and nothing on screen explaining why, so it is checked by the test suite at eight size checkpoints on every level.

What is the dash for?

A short speed burst — about 85% faster — for escaping a hunter that has picked you out. It drains fast and refills only while you are not using it, so it is an escape tool rather than a travel speed.

Do the other fish do anything, or do they just swim?

Three behaviours. Drifting fish wander. Wary fish flee when you get close enough to eat them. Hunters swim straight at you when they outrank you, and later tanks are mostly hunters. The test suite measures the distance each brain ends up at rather than trusting the labels.

Is this the same as a merge game?

No, and the difference is the point. In a merge game two equal things combine into one bigger thing. Here nothing merges: a bigger fish eats a smaller one and stays itself. Equal-sized fish pass straight through each other.

Does it work on a phone?

Yes. Drag anywhere in the tank and your fish swims toward your finger; holding down dashes. The tank keeps its shape in portrait, so there is no need to rotate.