One tap. One green zone. The fish escapes if your timing is even a second off — can you beat 00:07?
Updated February 15, 2026 — install in under a minute on Android 8.1+
Pick one offer before you cast your first line — all bonuses are redeemable on sign-up.
Wagering requirements apply to all bonuses. Minimum deposit required where stated. New players only. Bonus validity periods apply. Play responsibly.
Big Underwater Fish runs on a precision timing engine that tracks a moving marker across a horizontal time bar in real time. When the Catch button appears above the water surface, the marker begins sweeping left and right along the bar. Your entire success rests on a single tap — land it in the narrow green zone and the fish is yours; let it drift into red and the fish darts away.
The difficulty escalates through speed. As you post faster best times and climb the leaderboard — which shows competitors like BigCatch at 00:07 and HookMaster at 00:10 — the marker accelerates and the green zone may narrow. Each session is short by design: completion times start in the low seconds range, making every run a quick, repeatable challenge rather than a drawn-out experience.
The game was built for Android 8.1 and above and ships at version 2.0, reflecting post-launch optimisation of the core timing loop. Controls are deliberately stripped to a single tap interaction so that reaction speed — not complex input — determines your rank on the leaderboard.
The entire game is controlled by a single tap on the Catch button. No swipes, no joystick, no multi-finger input — your reaction time is the only variable that matters.
The time bar with its sliding marker demands you tap at the exact moment the marker sits inside the green zone. Even a fraction of a second late turns the bar red and the fish escapes.
The game increases pressure as you improve — faster marker movement and tighter timing windows mean the same catch that earned you 00:20 won't satisfy the leaderboard's top ten.
The game renders a multi-layered underwater scene — turquoise surface water, deep blue mid-depths, sandy ocean floor with a treasure chest and anchor — keeping visual context while you focus on timing.
Every catch is recorded against a leaderboard featuring twelve ranked positions. Your personal entry (highlighted in green as "You") shows your standing relative to BigCatch, HookMaster, DeepDiver and others.
FancyMob Studios published Big Underwater Fish on February 9, 2026, with the current build (version 2.0) pushed on February 15, 2026. The game is distributed via Google Commerce Ltd and is available exclusively on Android 8.1 and above.
Rated 3+ with no age restrictions, it targets casual players who want a short precision challenge that can be completed in seconds and replayed immediately.
Free on Android 8.1 and above. No account required. Installs in under a minute. Beat 00:07 on the leaderboard.
Download for Android — FreeRequires Android 8.1+. Contains advertising. Rated 3+. Version 2.0. Developed by FancyMob Studios.