
BIG FISH! Idle Evolution
Tap, grow and evolve your fish
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Free
In-App Purchases
Rating summary
About
Start as a tiny tadpole. End as the biggest creature in the ocean.
BIG FISH! is a relaxing tap-and-grow game. Every tap adds mass to your fish. Grow enough and it evolves into a new species: 30 in total, from a 2-gram tadpole to a 150-tonne blue whale.
TAP TO GROW
• Tap anywhere on the screen. Every tap makes your fish heavier.
• Land critical taps for triple growth.
• Watch your fish swim and turn in a living, animated ocean.
EVOLVE 30 SPECIES
• Guppy, goldfish, lionfish, shark, orca, blue whale and many more.
• Every species is bigger than the last.
• Evolution is automatic: reach the mass, become the fish.
UPGRADE YOUR GROWTH
• Earn coins as you play and spend them on five upgrades.
• Grow faster per tap, per second and while you are away.
KEEPS GROWING WHILE YOU'RE AWAY
• Your fish keeps growing for up to 12 hours while the game is closed.
• Come back, collect your reward and carry on.
OUTGROW THE OCEAN
• An ocean of 600 rivals ranked by mass: real players, plus ocean fish while players are few.
• Swim past them one by one on your way to #1.
FAIR AND SIMPLE
• No ads.
• No account and no sign-up.
• Works offline.
• Optional in-app purchases of gems speed up growth. Every species can be reached just by playing.
How big can you get?
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What's New in BIG FISH! Idle Evolution
1.0.2
October 15, 2026
New: Feast! From Royal Gramma on, your taps fill a feast meter. A full meter gives your fish 40 minutes of growth at once, up to 12 times a day. Offline Growth now has 50 finer levels, so it keeps paying off for the whole journey. Bug fixes and stability improvements.
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Subscriptions & In-App Purchases
$4.99
550 Gems
A bag of gems with a 10% bonus.





