Tiny Fishing

Tiny Fishing is a casual idle fishing game originally created by MadPuffers for Cool Math Games. The gameplay loop is intentionally simple: release your line into the water, then steer the hook left and right to collect fish as they swim past at different depths. Each cast takes about 20 seconds and earns you coins based on what you reel in — common fish near the surface fetch small amounts, while rarer and more exotic species found deeper down are worth significantly more. Every coin you earn feeds into two upgrades: Depth extends how far your line can reach, opening up access to more valuable fish lower in the water column, while Reel Size increases how many fish you can grab in a single cast. Treasure chests appear periodically at deeper depths and award a large coin bonus when caught, which can meaningfully accelerate your upgrade progress. The fish you encounter grow progressively more unusual as you go deeper — from everyday mackerel and sardines near the surface, through sharks and swordfish in the mid-range, down to exotic and rare species at the greatest depths. There are no fail states, no timers, and no lives — just a gentle, satisfying loop of casting, collecting, and upgrading. Tiny Fishing is equally enjoyable in short two-minute sessions and as a game you leave running in a background tab, checking in periodically to spend accumulated coins.

Tiny Fishing was originally published by MadPuffers on Cool Math Games, where it became one of the site's most played titles. This browser version runs the same game with no downloads, accounts, or plugins required, making it accessible on school Chromebooks, work computers, and any device with a modern browser. Because the game is built in HTML5, it works on Chrome, Firefox, Safari, and Edge without needing Flash or any special permissions. Your progress is saved automatically to your browser's local storage — closing the tab and reopening it later will restore your coins, upgrades, and depth level exactly as you left them. If you want to transfer your save to a different device or browser, note that local storage is browser-specific, so you would need to start fresh on a new device.

The fish in Tiny Fishing are organized by depth — the deeper your line reaches, the more valuable and exotic the species you encounter. Common fish like mackerel and sardines dominate the shallow water and earn only a few coins per catch. As you upgrade your depth, you'll progress through more valuable mid-range fish including tuna and swordfish, then into rarer species deeper down. Sharks appear in the deeper zones and are among the highest-value catches before you reach the deepest tier. At the greatest depths, seahorses are widely considered the final and rarest animal in the current version of the game — catching one is a milestone that signals you've reached the end of the upgrade progression. For upgrade priority, Depth is almost always the better first investment: reaching deeper water unlocks higher-value fish, which accelerates coin income far faster than adding more reel capacity at shallow depth. Once your depth is high enough to consistently reach mid-tier fish, start balancing Reel upgrades to catch more per cast.